Forty Years Ago in the Lower Rio Grande Valley: Day Three


Back in late May of 1983, four members of the Lancaster County Bird Club—Russ Markert, Harold Morrrin, Steve Santner, and your editor—embarked on an energetic trip to find, observe, and photograph birds in the Lower Rio Grande Valley of Texas.  What follows is a daily account of that two-week-long expedition.  Notes logged by Markert some four decades ago are quoted in italics.  The images are scans of 35 mm color slide photographs taken along the way by your editor.


DAY THREE—May 23, 1983

For Russ, Harold, and Steve, this trip would target several bird species each individual had never observed at any prior time in their lives.  Upon seeing a new bird, they could add it to their personal “life list”.  They, like thousands of other “listers”, were dedicated to the goal of having a life list that included over 600 species seen in the American Birding Association (A.B.A.) area—North America north of Mexico.  Harold had traveled throughout much of North America (and the world) and had an A.B.A. life list well in excess of 600 species, thus he had seen nearly all of the regularly occurring birds in the coverage area.  His chance for seeing new species was limited to vagrants that might wander into North America or tropical birds that, over time, had extended their range north of Mexico into the United States.  I don’t recall  how many species Russ and Steve had seen, but I know each had very few opportunities for new finds east of the Rocky Mountains.  For all three of these men, the Lower Rio Grande Valley presented a best bet to add multiple species to their lists.  I had never been south of Cape Hatteras or west of Pennsylvania, so I had the opportunity to add dozens of species to a life list.  Throughout the trip, Russ, Harold, and Steve enthusiastically helped me locate and see new species.  As a result, I saw over 50 new birds to add to my list.

One of the functions of the American Birding Association was to decide which bird species an observer could add to the life list.  The official A.B.A. list was revised regularly to include not only regularly occurring native species, but vagrants as well.  One of the trickier determinations was the status of introduced species.  Back in 1983, a birder could count a Ring-necked Pheasant seen in Pennsylvania on their A.B.A. life list because they were thought to be freely reproducing with a population sustainably established in the state.  Today, they are considered an exotic release and are not countable under A.B.A. rules.

Enter the Black Francolin (Francolinus francolinus), a member of the pheasant family that back in 1983, was countable under A.B.A. rules.  Native to India, the Black Francolin was introduced into southwest Louisiana in 1961 and was apparently reproducing and established.  Russ had a tip that they were seen with some regularity in areas of farmland, marsh, and oil fields south of Vinton, Louisiana.  It was one of this trip’s target species for his life list.

“Ready for Black Francolin.  Up at 5:30 — After breakfast, we went to Gum Cove Road.  No Francolins, but at the end of the blacktop road, we had 5 Purple Gallinules in the scope at one time.  King Rails were plentiful.  We found a dead male Painted Bunting.  Later, we saw a very beautiful live one.  Water everywhere.  Flooded fields everywhere.  The road was flooded for about 50 yards at one point.  White Ibis were abundant.”

Purple Gallinule
Purple Gallinules (Porphyrio martinicus) were common along Gum Cove Road.  In silhouette from a distance, those that were perching atop the shrubs raised hopes that we had located the sought after Blank Francolin, but they were all Purple Gallinules.  We weren’t overly disappointed.  (Vintage 35 mm image)
Painted Bunting
The live male Painted Bunting (Passerina cirus) seen along Gum Cove Road.  (Vintage 35 mm image)

Other sightings of note along Gum Cove Road included: Northern Bobwhite, Common Nighthawk, Cattle Egret, Green Heron, American Bittern, Snowy Egret, Glossy Ibis, Black-necked Stilt (Himantopus mexicanus), Forster’s Tern, Black Tern, Yellow-billed Cuckoo, Eastern Kingbird, Purple Martin, Barn Swallow, Brown Thrasher, Loggerhead Shrike, Red-winged Blackbird, Brown-headed Cowbird, Eastern Meadowlark, Boat-tailed Grackle (Quiscalus major), and Great-tailed Grackle (Quiscalus mexicanus)—a very large and noisy blackbird I had never seen before.

Glossy Ibis
A Glossy Ibis (Plegadis falcinellus) in a flooded area along Gum Cove Road.  (Vintage 35 mm image)

The reader may be interested to know that today, the area between Vinton and the Gulf of Mexico has largely been surrendered to the forces of the hurricanes that strike the region with some regularity.  Cameron Parish* is a sparsely populated buffer zone of marshes, abundant wildlife, and oil and gas wells.  Its population of more than 9,000 in 1983 has plunged to less than 6,000 today.  Hurricane Rita (2005) and Hurricane Ike (2008) precipitated the sharp decline.  The latter hurricane had a 22-foot storm surge that flooded areas 60 miles inland of the coastline.  Following these storms, the majority of severely damaged and destroyed homes were not rebuilt and residents in the most affected areas relocated.  In 2020, Hurricane Laura made landfall at Cameron Parish with record-tying 150 mph winds and a storm surge that pushed flood waters inland to Lake Charles.  Six weeks later, Hurricane Delta followed with 100 mph winds.  For government agencies, the emergency response required by these two storms was minimized by the reduced presence of people and/or their personal property.

* A parish in Louisiana is similar to a county in other states.

Category 4 Hurricane Laura making landfall at Cameron Parish, Louisiana, on August 27, 2020, with wind speeds of 150 mph.  Had this storm come ashore to the east at New Orleans or to the west at Houston, it would have catastrophically impacted a million people or more.  (N.O.A.A./National Weather Service image)

“After a quick stop at the camp grounds, where I slipped and fell in the shower last nite, we headed south.  Larry saw many birds en route.”

Russ took a bad fall on a slippery wet concrete floor and had bruises to show for it.  It worried me; he was 71 years old at the time.  But he was adamant about continuing on and did so with great vigor.

Just hours after a sojourn through the swampy parcels south of Vinton, we were cruising through the metropolis of Houston, Texas, then across a landscape with less cultivated cropland and more scrubland with grazing.  Here and there, but primarily to the east of Houston, blankets of roadside wildflowers painted the landscape with eye-popping color.  Lady Bird Johnson encouraged the plantings soon after she and Lyndon returned to Texas upon leaving life in the White House in 1969.  The sight of those vivid blooms was so memorable and so beautiful.  One couldn’t resist making nasty comparisons to the gobs of mowed grass and mangled trash along the highways back in Pennsylvania.

Birds along the way: Ruby-throated Hummingbird, Common Nighthawk, Black-bellied Whistling Duck, Yellow-crowned Night Heron, Great Blue, Heron, Great Egret, Black Vulture, Turkey Vulture, Red-tailed Hawk, Laughing Gull, Black Tern, Scissor-tailed Flycatcher, Cliff Swallow, Loggerhead Shrike, and Painted Bunting.  I saw my first Black-bellied Whistling Ducks (Dendrocygna autumnalis) and Golden-fronted Woodpecker (Melanerpes aurifrons) near Woodsboro, Texas, and added both to my life list.

“We stopped for the nite at an A OK camp ground 7 miles south of Kingsville.”

Day Three: Vinton, Louisiana, to Kingsville, Texas, a distance of 404 miles.  (United States Geological Survey base image)

Birds at the camp included two Black-bellied Whistling Ducks flying overhead, Common Nighthawk, Golden-fronted Woodpecker, Blue Grosbeak, and another “lifer”—Curve-billed Thrasher (Toxostoma curvirostre).

We also saw a Mexican Ground Squirrel (Ictidomys mexicanus), easily identified by the rows of white spots running the length of its back.

While relaxing at the campsite that evening, we watched the landscape darken and remarked how interesting it was that the glowing red sun had yet to set below the distant horizon—a land so very flat and air so hazy and humid.

Common Nighthawk
We found this Common Nighthawk roosting on a tree limb near our campsite.  During our first few days in Louisiana and Texas, it became increasingly evident that we were in the midst of their peak northbound spring movement.  (Vintage 35 mm image)

Forty Years Ago in the Lower Rio Grande Valley: Day Two


Back in late May of 1983, four members of the Lancaster County Bird Club—Russ Markert, Harold Morrrin, Steve Santner, and your editor—embarked on an energetic trip to find, observe, and photograph birds in the Lower Rio Grande Valley of Texas.  What follows is a daily account of that two-week-long expedition.  Notes logged by Markert some four decades ago are quoted in italics.  The images are scans of 35 mm color slide photographs taken along the way by your editor.


DAY TWO—May 22, 1983

Our goal today was to continue traveling and reach western Louisiana.

“We were on our way at 6:08.  Stopped for a quick lunch in the camper and drove to Vinton, Louisiana, KOA.  Lots of hard rain through Tennessee, Georgia, and Alabama.

Day Two: Sweetwater, Tennessee, to Vinton, Louisiana, a distance of 786 miles.  (United States Geological Survey base image)

As we crossed Mississippi and entered Louisiana, we left the rain and the Appalachians behind.  Upon crossing the Mississippi River, we had arrived in the West Gulf Coastal Plain, the physiographic province that extends all the way south along the Texas coast to Mexico and includes the Lower Rio Grande Valley.  West of Baton Rouge, we began seeing waders in the picturesque Bald Cypress swamps—Great Egrets, Green Herons (Butorides virescens), Little Blue Herons (Egretta caerulea), and Glossy Ibis (Plegadis falcinellus) were identified.  A Pileated Woodpecker was observed as it flew above the roadside treetops.

The rains we endured earlier in the trip had left there mark in much of Louisiana and Texas.  Flooding in agricultural fields was widespread and the flat landscape often appeared inundated as far as the eye could see.  Along the highway near Vinton, we spotted the first two of the many southern specialties we would find on the trip, a Loggerhead Shrike (Lanius ludovicianus) and a Scissor-tailed Flycatcher (Tyrannus forficatus), both perched on utility wires and searching for a meal.

Loggerhead Shrike
Near Vinton, Louisiana, a Loggerhead Shrike was on the lookout for either a large insect or small bird upon which it could prey.  (Vintage 35 mm image)

Forty Years Ago in the Lower Rio Grande Valley: Day One


Back in late May of 1983, four members of the Lancaster County Bird Club—Russ Markert, Harold Morrrin, Steve Santner, and your editor—embarked on an energetic trip to find, observe, and photograph birds in the Lower Rio Grande Valley of Texas.  What follows is a daily account of that two-week-long expedition.  Notes logged by Markert some four decades ago are quoted in italics.  The images are scans of 35 mm color slide photographs taken along the way by your editor.


The trip was scheduled to coincide with breeding season in order to provide a good chance of locating a number of tropical species that happen to reach the northern limit of their range along the Lower Rio Grande.  In addition, there was the possibility of seeing many northbound end-of-season spring migrants funneling through the valley as they followed the Gulf Coast on their way to nesting grounds in eastern and central sections of the United States and Canada.

DAY ONE—May 21, 1983

The trip began at Russ Markert’s home in Lititz, Pennsylvania where I slept the night before departure.  Markert’s van camper would be both our mode of transportation and accommodation for the journey.  Upon arrival in south Texas, we would pick up Harold Morrin and Steve Santner at the Brownsville Airport.  They would join us for a week before returning by air to Pennsylvania.

“Larry slept at my house last night so we could get an early start today — camper packed and read to go.  Arose at 5:30.  We alternated driving, about every two hours.  Heavy rain through Virginia and West Virginia.  Arrived at Sweetwater KOA, Tennessee, at 5:30 P.M.  The weather turned to rain.”

Day One: Lititz, Pennsylvania, to Sweetwater, Tennessee, a distance of 656 miles.  (United States Geological Survey base image)

Northern Bobwhite were among the many birds of farm and field at the Sweetwater KOA campground.  After dinner and before the rain began, I recall going for a swim in the pool, something I craved being able to do during the sweltering evenings we would experience in south Texas during the week to follow.

Mother’s Day Flowers

Let’s have a look at some of the magnificent native wildflowers blooming on this Mother’s Day in forests and thickets throughout the Lower Susquehanna River Watershed.

Rue Anemone
Rue Anemone (Thalictrum thalictroides) is a fragile little wildflower of open woods.
Blackhaw
The Blackhaw (Viburnum prunifolium) is a shrub of thickets and forest borders. The flower clusters mature into an abundance of berries relished by birds and other wildlife.
Black Cherry
A large Black Cherry tree adorned in white blossoms can be pleasing to the eye and very beneficial for pollinating insects.
Common Pawpaw
The Common Pawpaw is a small tree of damp well-drained soils.  Where conditions are ideal, it may form clonal colonies in the forest understory.  The deep maroon blooms mature into banana-like fruits, hence its alternate common name “Custard Apple”.
Mayapple
The Mayapple or Mandrake (Podophyllum peltatum) commonly blankets the forest floor.  It, like other ephemeral wildflowers, is vulnerable to invasions by non-native shrubs that leaf out earlier in spring than native species and rob them of sunlight during their already abbreviated growing season.

Aren’t they spectacular?

Why not take a stroll to have a look at these and other plants you can find growing along a nearby woodland trail?  You could check out some place new and get a little exercise too!

If you go, please tread lightly, take your camera, mind your manners, and…

Photo of the Day

Baltimore Oriole
How ’bout those Baltimore Orioles, eh?  This was a banner day for them both in the trees and on the diamond.  Their migration may be peaking now, but the season shows potential for much more to follow.

What’s Flying Right Now

Here’s a quick look at just a few of the birds that have been moving northward in recent days…

Gray Catbird
Find a thicket, a garden with plenty of shrubs, or a brushy woodland and you’ll find Gray Catbirds.  Many will stay in the Lower Susquehanna River Watershed to nest.
Orchard Oriole
Orchard Orioles favor old meadows with large shade trees.  Some remain to nest.
Common Yellowthroat
The Common Yellowthroat is one of the more than two dozen species of warblers found regularly during spring migration.   It nests locally in wet thickets.
Warbling Vireo
The Warbling Vireo can be found singing among the branches of large streamside trees like this Green Ash.
Blue Jay
Unlike the preceding species which do the majority of their migrating by night, Blue Jays move north by daylight.  Keep an eye on the sky and you just might see a flock or two go by!

Stalled Migration About to Resume

For nearly a week now, a slow-moving low pressure system has not only brought heavy rain and cold temperatures to the northeastern United States, it has also stalled the northbound flights of migrating Neotropical birds.  As this weather system at last drifts offshore, birds including warblers, thrushes, vireos, flycatchers, catbirds, hummingbirds, orioles, tanagers, and others should again resume their northward movements.

National Weather Service radar presently displays returns of these airborne nocturnal migrants in clear storm-free skies throughout the eastern half of the United States and Canada.  As the showers and clouds depart the lower Susquehanna valley and areas to the north, the birds immediately to our south will begin to fill the void.

Gray and green halos surrounding radar stations indicate nocturnal bird migration across much of the eastern United States and Canada.  Note their absence north of Maryland where the effects of the low pressure system currently located over New England are temporarily blocking these flights.  (NOAA/National Weather Service radar image)

Our advice to you…plan to spend some time outdoors this weekend looking for our colorful Neotropical visitors.  Their springtime songs should fill the warm air of forest and thicket.  You won’t want to miss it.

How Much Rainwater Runs Off Your Roof During a Storm?

During the spare time you have on a rainy day like today, you may have asked yourself, “Just how much water do people collect with those rain barrels they have attached to their downspouts?”  That’s a good question.  Let’s do a little math to figure it out.

First, we need to determine the area of the roof in square feet.  There’s no need to climb up there and measure angles, etc.  After all, we’re not ordering shingles—we’re trying to figure out the surface area upon which rain will fall vertically and be collected.  For our estimate, knowing the footprint of the building under roof will suffice.  We’ll use a very common footprint as an example—1,200 square feet.

40′ x 30′ = 1,200 sq. ft.

By dividing the area of the roof by 12, we can calculate the volume of water in cubic feet that is drained by the spouting for each inch of rainfall…

1,200 ÷ 12 = 100 cu. ft. per inch of rainfall

 

Next, we multiply the volume of water in cubic feet by 7.48 to convert it to gallons per inch of rainfall…

100 x 7.48 = 748 gallons per inch of rainfall

 

That’s a lot of water.  Just one inch of rain could easily fill more than a single rain barrel on a downspout.  Many homemade rain barrels are fabricated using recycled 55-gallon drums.  Commercially manufactured ones are usually smaller.  Therefore, we can safely say that in the case of a building with a footprint of 1,200 square feet, an array of at least 14 rain barrels is required to collect and save just one inch of rainfall.  Wow!

Why send that roof water down the street, down the drain, down the creek, or into the neighbors property?  Wouldn’t it be better to catch it for use around the garden?  At the very least, shouldn’t we be infiltrating all the water we can into the ground to recharge the aquifer?  Why contribute to flooding when you and I are gonna need that water some day?   Remember, the ocean doesn’t need the excess runoff—it’s already full.

Photo of the Day

Bald Cypress
Rain is on the way. so the tree you planted on Earth Day is about to get a good soaking.  What’s that?  You say you didn’t plant a tree on Earth Day?  Well, you’re in luck.  Tomorrow happens to be Arbor Day.  For more than a century, it’s been an occasion solely devoted to the planting of trees.  If you look carefully, you can find native species in most local nurseries.  About six years ago, we picked up this Bald Cypress (Taxodium distichum) at a lumberyard garden center.  As you can see, it’s already towering for the sky.  The Bald Cypress is an excellent choice for wet soil and can even be planted in standing water.  Upon showering the ground in autumn, its finely-divided deciduous foliage requires no raking.  So why not mark this year’s Arbor Day weekend by planting a native tree or two at your place?  Sure beats mowing grass!

Photo of the Day

Pied-billed Grebe
The Pied-billed Grebe is an elusive visitor to local ponds and lakes during migration.  Like a submarine, it can sink out of sight to avoid detection.

Photo of the Day: It’s the Daily Double

Double-crested Cormorants in breeding plumage.
In addition to the pair of small tufts of feathers on the head, Double-crested Cormorants have seldom-noticed blue eyes and mouths during the breeding season.
Double-crested Cormorants in breeding plumage.
After underwater forays in search of fish, they can often be seen drying their wings in the warm sunshine.

Photo of the Day

Yellow-rumped Warbler
The Yellow-rumped Warbler is a common migrant throughout the Lower Susquehanna River Watershed right now.  Look for it and other colorful species along woodland edges, particularly where conifers are intermingled among deciduous growth.

Thank You Volunteers!

As your editor here at susquehannawildlife.net, I’d like to take a moment to thank all the volunteers who gave of their valuable time today to pick up litter, plant trees, and take other civic actions in observance of Earth Day.  Your hard work has not gone unnoticed.

Special appreciation goes out to the anonymous crew that worked its way through the area surrounding our headquarters to pick up the trash on the rental and business properties in the neighborhood.  My personal thanks is extended to you.

If you’ve never lived in an urban or downtown area, you’re probably unaware of the environmental damage and decline in the quality of life that occurs when “investors” start buying up the houses near you.  The first things to go are the trees and shrubs—less maintenance that way.  Next, more paving is installed to park more cars.  That leads to more stormwater runoff, so look out if you happen to live downstream.  Then the long-term neglect begins.  The absentee “slumlords” show up only to collect the rent, if at all.  Unless the tenants are conscientious enough to do a little sweeping, the rubbish begins to accumulate.  It’s a funny thing, when there’s a bunch of junk lying around, people feel compelled to start dumping more.  So to you volunteers who today helped nip the problem in the bud with your efforts, I want you to know that you’re the best!  As for you greedy landlords—shame on you.

Termite Terminators

With temperatures on the rise in this morning’s bright sunshine, a flight of Eastern Subterranean Termites (Reticulitermes flavipes) streamed from the shelter of this tree snag to ascend skyward in a spreading cloud of kings and queens looking to start new colonies of wood chompers.

Eastern Subterranean Termites swarming.
A nuptial flight of Eastern Subterranean Termites taking to the wing after ascending a dead tree alongside a small pond.

As the swarm cleared the treetops, it immediately attracted the attention of some recently-arrived migratory birds…

Barn Swallows and Chimney Swifts Attack an Ant Swarm
Barn Swallows and Chimney Swifts seized the opportunity to devour an easy meal…hundreds of flying termites.  Their timing was perfect.  The first Barn swallows of the season arrived here just two days ago, the first appearance of the swifts was concurrent with this morning’s swarm.
Barn Swallow and Chimney Swifts
Our squadron of predators quickly devoured the airborne insects.  The entire event was concluded in just five minutes.

Photo of the Day

Female Red-winged Blackbirds in a cattail wetland.
This year’s unseasonably mild weather has hastened the northward migration of many birds.  Neotropical species including warblers and Broad-winged Hawks are already pushing through the lower Susquehanna region in numbers.  But it seems the spring movement may be a little bit protracted for female Red-winged Blackbirds, which are still rolling through by the hundreds despite the males being here, some of them defending nesting territories, since late February.  No sense of urgency?

Photo of the Day

Osprey
The race north toward a favorable breeding territory is priority one for a migrating Osprey, even on a rainy day.  Then again, you may see one stop along the way to do a little fishing. That’s priority two.

Photo of the Day

Potting Trees and Shrubs
Potting small bare root tree and shrub seedlings in a compost mixture allows you to nurture them with some tender loving care in your home nursery at least through the summer.   The extra attention they’ll get allows you to plant them as larger specimens this autumn or thereafter.   We’ve found that giving native species this quick head start in the nursery significantly improves their survival rate in the field.

Photo of the Day

Lancaster County Conservation District Tree Sale
Staff distribute trees, shrubs, and perennial flowers during today’s Lancaster County Conservation District Tree Seedling Sale.  Customers pre-ordered their selections back in March to receive great deals on the livestock they’ll need for planting an orchard, pollinator garden, forest buffer, or private wildlife refuge.

Photo of the Day

A Reforestation Project
Visible in the background of this image, an infestation of invasive Emerald Ash Borer larvae has killed the trees in a woodlot comprised exclusively of Green Ash.  Left standing, the dead snags provide excellent habitat for a number of animal species including cavity-nesting birds like woodpeckers, known consumers of these destructive larvae.  To reforest the mowed field in the foreground, a variety of native deciduous trees have been planted.  In areas where a diversity of trees are not present to furnish a source of seeds for natural succession, manually planting an array of seedlings provides some insurance against the risk of allowing establishment of a single pioneer species such as the vulnerable Green Ash.  The white plastic tubes on the young trees offer protection from the ever-browsing White-tailed Deity.

Photo of the Day

Wilson's Snipe
A northbound flock of migrating Wilson’s Snipe.  In coming weeks, other shorebird/sandpiper species are on the way as well.

Hidden Surprises

If you’re like us, you’re forgoing this year’s egg hunt due to the prices, and, well, because you’re a little bit too old for such a thing.

Instead, we took a closer look at some of our wildlife photographs from earlier in the week.  We’ve learned from experience that we don’t always see the finer details through the viewfinder, so it often pays to give each shot a second glance on a full-size screen.  Here are a few of our images that contained some hidden surprises.


Blue-winged Teal and American Black Ducks
We photographed these Blue-winged Teal and American Black Ducks as they were feeding in a meadow wetland…

..but upon closer inspection we located…

Common Green Darner
…a Common Green Darner patrolling for mosquitoes and other prey.  The Common Green Darner is a migratory species of dragonfly.  After mating, they deposit their eggs in wetland pools, ponds, and slow-moving streams.

Water Strider
We photographed this Water Strider as it was “walking” across a pool in a small stream that meanders through a marshy meadow…

..but after zooming in a little closer we found…

Water Strider with a Mosquito
…a mosquito coming to deposit its eggs had been seized as a mid-day meal.   Look at how the legs of the Water Strider use the surface tension of the pool to allow it to “walk on water”, even while clutching and subduing its prey.

Canada Geese
We photographed these resident Canada Geese in a small plowed cornfield in an area managed mostly as a mix of cool-season and warm-season grassland…

..but then, following further examination, we discovered…

Ring-necked Pheasant
…a hen Ring-necked Pheasant on a nest.

THE BAD EGG

Red-winged Blackbirds
We photographed this small group of migrating Red-winged Blackbirds while it was feeding among corn stubble in a plowed field…

…but a careful search of the flock revealed…

Brown-headed Cowbirds and Red-winged Blackbirds
…three female Brown-headed Cowbirds among them (the unstreaked brown birds, two to the far left and one among the “red-wings” to the right).  Cowbirds practice nest parasitism as a means of putting their young up for adoption.  Red-winged Blackbirds and numerous other species are the unknowing victims.  The female cowbird discreetly deposits her egg(s) in the adopting party’s nest and abandons it.  The cowbird egg and the hatchling that follows is cared for by the victim species, often at the expense of their own young.

Photo of the Day

Painted Turtle
How about slowing down for a change?  Some of us have no choice but to be out along the highways this weekend and frankly, we don’t have very much sympathy for the urgency of your “journey”.  And while you’re at it, hang up the phone, you can “twitface” your B.F.F. later.

Purple Haze Across the Fields

Have you noticed a purple haze across the fields right now?  If so, you may have wondered, “What kind of flowers are they?”

A purple haze of color stretches across fields not already green with cold-season crops like winter wheat.

Say hello to Purple Dead Nettle (Lamium purpureum), a non-native invasive species that has increased its prevalence in recent years by finding an improved niche in no-till cropland.  Purple Dead Nettle, also known as Red Dead Nettle, is native to Asia and Europe.  It has been a familiar early spring “weed” in gardens, along roadsides, and in other disturbed ground for decades.

Purple Dead Nettle owes its new-found success to the timing of its compressed growing season.  Its tiny seeds germinate during the fall and winter, after crops have been harvested and herbicide application has ended for the season.  The plants flower early in the spring and are thus particularly attractive to Honey Bees and other pollinators looking for a source of energy-rich nectar as they ramp up activity after winter lock down.  In many cases, Purple Dead Nettle has already completed its flowering cycle and produced seeds before there is any activity in the field to prepare for planting the summer crop.  The seeds spend the warmer months in dormancy, avoiding the hazards of modern cultivation that expel most other species of native and non-native plants from the agricultural landscape.

Purple Dead Nettle in Bloom
Flowering Purple Dead Nettle as a volunteer cover crop among last year’s corn stubble in a no-till field.
Purple Dead Nettle
Like the flowers of orchids, Purple Hedge Nettle blossoms are described as yoke shaped or bilateral (zygomorphic).  Psychedelic experiences are produced only through observation, not by ingestion.  A member of the mint family, its edible young leaves and tops have nutritional value, making a unique addition to salads and soups.
Purple Dead Nettle, Common Dandelion, and Shepherd's Purse
We call them “weeds”, but what do we know?  Purple Dead Nettle, Common Dandelion, and Shepherd’s Purse (Capsella bursa-pastoris), three edible non-native invasive species with similar life cycles seen here flowering along a rural road among fields where intensive farming is practiced.  Shepard’s Purse, like many members of the mustard family, is already producing seeds at the bottom of the flower cluster by the time the uppermost buds open for business.
Spraying Herbicide
In preparation for seeding of a warm-season crop,  herbicide is applied on a no-till field to kill Shepherd’s Purse and other cool-season plants.  To help prevent sediment and nutrient discharge from lands where high-intensity agriculture is practiced, no-till methods are used to reduce runoff from the areas of bare soil that would otherwise be created by traditional plowing.

While modern farming has eliminated a majority of native plant and animal species from agricultural lands of the lower Susquehanna valley, its crop management practices have simultaneously invited vigorous invasion by a select few non-native species.   High-intensity farming devotes its acreage to providing food for a growing population of people—not to providing wildlife habitat.  That’s why it’s so important to minimize our impact on non-farm lands throughout the remainder of the watershed.  If we continue subdividing, paving, and mowing more and more space, we’ll eventually be living in a polluted semi-arid landscape populated by little else but non-native invasive plants and animals.  We can certainly do better than that.

Photo of the Day

A male Deer Tick
It’s so tiny, you can’t even feel it crawling on your skin.  It’s the Deer Tick (Ixodes scapularis), also known as the Black-legged Tick, and it’s already looking for someone to latch on to.   Don’t let it be you.  After your foray outdoors, be certain to shower and conduct a full body search for these little hitchhikers.  Then, remember to launder the clothing you were wearing.  Deer Ticks in the Lower Susquehanna River Watershed frequently transmit Borrelia burgdorferi, the bacteria that causes Lyme disease, and can be vectors of other microbiological pathogens as well.  The specimen in this photograph is an adult male.  Adult females are similar, but the edge of the abdomen has a crescent-shaped reddish border.  The nymphal stage tick, which is half the size of an adult, is even more likely to infect humans with the Lyme disease bacteria, so be extra vigilant. 

Underwater View of Life in a Vernal Pool

It may look like just a puddle in the woods, but this is a very specialized wetland habitat, a habitat that is quickly disappearing from the Lower Susquehanna River Watershed.  It’s a vernal pool—also known as a vernal pond or an ephemeral (lasting a short time) pool or pond.

Viable vernal pools have several traits in common…

      • They contain water in the spring (hence the name vernal).
      • They have no permanent inflow or outflow of water.
      • They typically dry up during part of the year—usually in late summer.
      • They are fish-free.
      • They provide breeding habitat for certain indicator species of forest-dwelling amphibians and other animals.
      • They are surrounded by forest habitat that supports the amphibians and other vernal pool species during the terrestrial portion of their life cycle.

To have a closer look at what is presently living in this “black leaf” vernal pool, we’re calling on the crew of the S. S. Haldeman to go down under and investigate.

Along the surface of the pool we’re seeing clusters of amphibian eggs, a sign that this pond has been visited by breeding adult frogs and/or salamanders during recent weeks.
Amphibian eggs and the white tail filaments of an invertebrate of interest, Springtime Fairy Shrimp (Eubranchipus vernalis), an endemic of vernal ponds.

Let’s take it down for a better look.  Dive, all dive!

Algae provides food for the shrimp and other inhabitants of the pool.  Leaf litter furnishes hiding places for the pool’s many inhabitants.
These loose clusters of eggs appears to be those of Wood Frogs, a vernal pool indicator species.
Clusters of Wood Frog eggs, the embryos within those in the center of the image less developed than those to the left.
More Wood Frog eggs.  Hatching can take anywhere from two weeks to two months, depending on temperature.
Wood Frog eggs with developing larvae (tadpoles) plainly visible.  The green color of the eggs is created by a symbiotic algae, Oophila amblystomatis, a species unique to vernal pools.  The algae utilizes the waste produced by the developing embryos to fuel its growth and in return releases oxygen into the water during photosynthesis.  Upon hatching, the tadpoles rely upon the algae as one of their principle food sources.
A zoomed-in view showing development of the larvae and what appears to be a tiny invertebrate clinging on the white egg in the upper right.  White eggs don’t hatch and may be infected by a fungus.
Wood Frog eggs and Springtime Fairy Shrimp.
Wood Frog eggs and Springtime Fairy Shrimp.
Springtime Fairy Shrimp swim upside-down.  Note the small, bluish clusters of eggs attached to the abdomens of these females.  Springtime Fairy Shrimp live their entire lives in the vernal pool.  After being deposited in the debris at the bottom of the pool, the eggs will dry out during the summer, then freeze and re-hydrate before hatching during the late winter.
A damselfly larva consuming fairy shrimp.  (Visible in the margin between the uppermost lobes of the dark-colored oak leaf to the right.)
Getting in close we see A) the damselfly larva eating a Springtime Fairy Shrimp and B) one of several discarded exoskeletons of consumed shrimp near this predator.
A fishfly larva (Chauliodinae).  Mosquito numbers are kept in check by the abundance of predators in these pools.
Springtime Fairy Shrimp and a Marbled Salamander (Ambystoma opacum) larva.  The presence of these species confirms this small body of water is a fully-functioning vernal pool.
Springtime Fairy Shrimp and two more larval Marbled Salamanders.  The salamanders’ enlarged gills are necessary to extract sufficient oxygen from the still waters of the pool.
The Marbled Salamander is one of three species of mole salamanders found in the Lower Susquehanna River Watershed.  All breed in vernal pools and live their air-breathing adult lives under the leaves of the forest in subterranean tunnels where they feed on worms and other invertebrates.  Photos of an adult Marbled Salamander and the other two species, Spotted Salamander (Ambystoma maculatum) and Jefferson Salamander (Ambystoma jeffersonianum), can be found by clicking the “Amphibians” tab at the top of this page.
Marbled Salamanders lay their eggs during the fall.  If the bed of the pool is dry at breeding time, the adult female will remain to guard the eggs until rain floods the pool.  The eggs hatch upon inundation, sometimes during the winter.
Marbled Salamanders, like all amphibians that develop in vernal pools, must complete transformation into their air-breathing terrestrial life stage before the pool dries up in the summer heat.
A larval Marbled Salamander explores the bottom of the pool.
A larval Marbled Salamander, Wood Frog eggs, and Springtime Fairy Shrimp, it’s an abundance of life in what at first glance may appear to be just a mud puddle.

We hope you enjoyed this quick look at life in a vernal pool.  While the crew of the S. S. Haldeman decontaminates the vessel (we always scrub and disinfect the ship before moving between bodies of water) and prepares for its next voyage, you can learn more about vernal pools and the forest ecosystems of which they are such a vital component.  Be sure to check out…

If you are a landowner or a land manager, you can find materials specifically providing guidance for protecting, restoring, and re-establishing vernal pool habitats at…

Wood Frogs mating
Wasted Effort-A pair of Wood Frogs mating in a dried-up vernal pool.

Photo of the Day

Rusty Blackbirds
Though uncommon, Rusty Blackbirds are regular spring migrants from late March into early May each year.  As they make their way north through the Lower Susquehanna River Watershed, floodplain wetlands are their favored habitat.  Rusty Blackbirds get their common name not only from the color of their winter plumage, but from their call note as well.  It closely resembles the squeaky sound made by a rusty gate hinge. 

Photo of the Day

American Goldfinch
‘Tis the first day of spring and this male American Goldfinch is beginning the molt from its drab winter garb into the spectacular feathers of its breeding plumage.

Off To The Races

Trying to get a favorable place to nest before others arrive, the “early birds” are presently racing north through the lower Susquehanna valley.  Check out these sightings from earlier today…

Ring-necked Ducks
A pair of Ring-necked Ducks.
Hooded Mergansers
Hooded Mergansers, two males and a female.
American Wigeons
A pair of American Wigeons.
A male Canvasback.
A male Canvasback.
Eastern Phoebe
During these chilly days of late winter, this hardy Eastern Phoebe finds sustenance by seizing flying insects along the water’s edge.
An American Robin in classic worm-hunting posture.
Possibly our most familiar sign of spring, an American Robin in classic worm-hunting posture.
A Common Grackle in a maple tree that is starting to flower.
An iridescent Common Grackle in a maple tree that is beginning to flower.
A male Red-winged Blackbird singing near a small patch of cattails.
A male Red-winged Blackbird singing from a perch near a small patch of cattails.  During the spring migration, noisy flocks of males compete for a breeding territory at these sites.  Each of the victors defends his spot and awaits the arrival of a female mate while the losers move on to vie for their own breeding location farther north.

Time to get outside and have a look.  The spectacle of spring migration passes quickly.  You don’t want to miss it!