L. L. Coble – Page 13 – LIFE IN THE LOWER SUSQUEHANNA RIVER WATERSHED

May 24, 2022May 24, 2022

Early May Migration

National Weather Service radar showed a sizeable nocturnal flight of migrating birds early this morning. Let’s go for a short stroll and see what’s around.

Radar returns from State College, Pennsylvania, display several bands of light rain and a massive flight of migrating birds. (NOAA/National Weather Service image)

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Gray Catbird — After coming in on an overnight flight, Gray Catbirds were numerous at dawn this morning.

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Black-and-white Warbler — Masses of Neotropical migrants are just beginning to arrive. This Black-and-white Warbler was found feeding on insects in a Green Ash tree that, so far, has survived Emerald Ash Borer (Agrilus planipennis) infestation.

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Veery — The Veery is a Neotropical thrush that nests in understory vegetation on forested slopes in the Lower Susquehanna River Watershed.

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Orchard Oriole — Orchard Orioles are here.

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Baltimore Oriole — And Baltimore Orioles are here too. Vibrant colors like these are what many observers find so wonderful about many of the Neotropical species.

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Double-crested Cormorants — Not all migrants move at night. While you’re out and about, keep an eye on the sky for diurnal fliers like these migrating Double-crested Cormorants, seen this morning a full ten miles east of the river.

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Carolina Wren — While many birds are still working their way north to their breeding grounds, resident species like this Carolina Wren are already feeding young. This one has collected a spider for its nestlings.

April 26, 2022August 15, 2022

Rising prices, an exhausted workforce, political polarization, and pandemic fatigue—times are tough. Product shortages have the consumer culture in a near panic. Some say the future just isn’t what it used to be.

Well, Uncle Tyler Dyer reminds us that things could be worse. He shares with us this observation, “Man, as long as people are spending money poisoning the weeds on their lawns instead of eating them, things aren’t that bad.”

Uncle Ty is particularly fond of the Common Dandelion (Taraxacum officinale), “Check it out. Roasted dandelion roots can make a coffee substitute, the blossoms a wine, and the leaves used to create my favorites, nutrient-dense salads or green vegetable dishes.”

Dandelion Salad — Uncle Ty Dyer’s lunch, fresh dandelion greens and hot bacon dressing.

So have a homegrown salad and remember, maybe things aren’t that bad after all.

April 17, 2022April 22, 2022

Photo of the Day

Spiders of the Lower Susquehanna River Watershed: "Tiger" Wolf Spider — A “Tiger” Wolf Spider (Tigrosa species) lurks beneath the doorstep at the susquehannawildlife.net headquarters. These arachnids reach only about one inch in length but appear startlingly larger due to their husky build. To feed, Wolf Spiders spin no web for snagging flying insects. Instead, they keep watch with their eight eyes, then ambush or chase down suitable prey. If handled roughly or pinched between an object such as a shoe and your skin, Wolf Spiders can inject a sore-producing venom. We like having them around our entranceway, just to keep a few eyes on things.

April 16, 2022April 16, 2022

Photo of the Day

Invasive Trees and Plants of the Lower Susquehanna River Watershed: Callery Pear including Bradford Pear — Presently in the valleys of the Lower Susquehanna River Watershed, you’re sure to see a gorgeous nightmare, showy stands of flowering Callery Pear (Pyrus calleryana). Invasive groves like this one quickly dominate successional habitat and often create monocultures, often excluding native pioneer trees like Eastern Red Cedar and several species of deciduous hardwood. The void beneath the pear trees in this photograph shows how deer browsing can intensify the damage, preventing other plant species from becoming established in the understory. In autumn, crimson foliage again makes these non-native trees a standout in the landscape. The red leaves attract birds including American Robins and Cedar Waxwings to the abundant berries, but European Starlings usually get to them first. Planted specimens of ornamental Callery Pears began producing fertile seeds when multiple varieties became available in addition to the self-sterile “Bradford Pears” that were planted widely during the last decades of the twentieth century. Cross-pollination between varieties produces the fertile seeds that are distributed by starlings and other birds as they digest the fruit.

April 14, 2022September 12, 2023

Emergence of the Turtles

Along the lower Susquehanna, an unseasonably mild day in early spring can provide an observer with the opportunity to witness an annual spectacle seldom seen by the average visitor to the river—concentrations of dozens, sometimes hundreds, of turtles as they emerge from their winter slumber to bathe in the year’s first surge of warm air and sunshine.

Reptiles of the Lower Susquehanna River Watershed: Snapping Turtle — Snapping Turtles (Chelydra serpentina) spend the winter buried in mud along the river shoreline and in nearby Alluvial Terrace Wetlands. We photographed this one just as it was digging its way out.

Reptiles of the Lower Susquehanna River Watershed: Painted Turtles — Freshly emerged Painted Turtles clamber onto a log to bask in the cloud-filtered sun.

Reptiles of the Lower Susquehanna River Watershed: Painted Turtle atop a Snapping Turtle — A Painted Turtle looking for a place to get out of the chilly water soon discovered the obvious solution.

It’s catching on, more Painted Turtles atop a Snapping Turtle in an Alluvial Terrace Wetland.

Reptiles of the Lower Susquehanna River Watershed: Red-eared Slider and Common Map Turtle — The Common Map Turtle (right) is the turtle most frequently observed basking on rocks and logs along the main stem of the Susquehanna. To the left is a Red-eared Slider (Trachemys scripta elegans), an increasingly numerous invasive species. The first Red-eared Sliders arrived in the river as, you guessed it, unwanted pets. Editor’s Note: Special thanks to the local North American Beaver (Castor canadensis) for trimming the trees and providing a clear shot for this photograph!

Reptiles of the Lower Susquehanna River Watershed: Red-eared Slider and Painted Turtles — And now, a quick quiz. Name the things that don’t belong in this picture? Here’s a hint: a non-native Red-eared Slider (left) joins indigenous Painted Turtles atop a discarded tire in an Alluvial Terrace Wetland in Dauphin County, Pennsylvania.

April 12, 2022

Photo of the Day

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Great Blue Heron — A Great Blue Heron in breeding plumage searches for prey in an Alluvial Terrace Wetland.

April 11, 2022April 11, 2022

Photo of the Day

Birds of Conewago Falls in the Lower Susquehanna River Watershed: American Robin — An American Robin searches wet leaves for earthworms and other invertebrates along the edge of an Alluvial Terrace Wetland near the Susquehanna.

April 10, 2022

Photo of the Day

Birds/Waterfowl of Conewago Falls in the Lower Susquehanna River Watershed: Buffleheads — Buffleheads on the Susquehanna.

April 9, 2022

Photo of the Day

Birds/Waterfowl of Conewago Falls in the Lower Susquehanna River Watershed: Ring-necked Ducks — A handsome pair of Ring-necked Ducks on the Susquehanna.

April 8, 2022

Photo of the Day

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Great Egret — During the late nineteenth century, Great Egrets were nearly exterminated by hunters who shot adult birds, often at their nest sites, to collect the ornate plumes that adorn their heads and backs during breeding season. Parentless young were left to die in the nests while the showy feathers of the adults were sold to clothiers as decorations for expensive hats. In Pennsylvania, the Great Egret nests at just a few locations and is listed as an endangered species.

April 7, 2022April 7, 2022

Photo of the Day

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Yellow-crowned Night Heron — In the urban landscape, massive old trees like this Eastern Sycamore not only provide shade and beauty, but they can also be essential nesting sites for birds like these Yellow-crowned Night Herons, a species listed as endangered in Pennsylvania. This pair is part of a small colony located in the stylish midtown section of the state’s capital city, Harrisburg.

April 6, 2022April 7, 2022

Photo of the Day

Birds of Conewago Falls in the Lower Susquehanna River Watershed: American Bittern — The American Bittern (Botaurus lentiginosus) is a member of the Ardeidae, the heron and egret family. It is a stealthy migrant, making its flights under cover of darkness, then resting and feeding in dense stands of Common Cattails and other marsh plants during the day. It avoids detection by raising its bill skyward to create a profile and color scheme that blends well with the contours of the vegetation. In Pennsylvania, loss of wetland habitat used for nesting has led to the American Bittern being listed as an endangered species.

March 25, 2022March 26, 2022

An Encore of the Susquehanna Seawatch

In late March and early April, a rainy night and fog at daybreak can lead to an ideal morning for spotting migratory waterfowl and seabirds during their layover on the lower Susquehanna. Visibility was just good enough to spot these birds at Harrisburg, Pennsylvania, most of them feeding at midriver.

Northern Shovelers are regular migrants, more often seen on ponds and in wetlands than on the river.

A pair of American Wigeons head upriver.

A small flock of northbound Buffleheads.

Lesser Scaup, eight of the more than 100 seen along Front Street in Harrisburg at the Pennsylvania Governor’s Residence. Note how the white bar on the wing’s secondaries becomes diffused and dusky in the primaries.

More Scaup, the lead bird with bright white extending through the secondaries into the primaries is possibly a Greater Scaup (Aythya marila).

Long-tailed Ducks, formerly known as Oldsquaw, are a diving duck that winters on the Great Lakes and on bays along the Atlantic Coast. They nest on freshwater ponds and lakes in the tundra of Canada and Alaska.

This pair of Hooded Mergansers may be nesting in a tree cavity nearby.

Peregrine Falcon Takes a Common Grackle — The local Peregrine Falcon grabbed a passing Common Grackle…

Bonaparte's Gulls — …prompting the more than 100 Bonaparte’s Gulls in the vicinity to quickly depart and fly upstream.

Birds of Conewago Falls in the Lower Susquehanna River Watershed: Northern Flicker — It pays to keep an eye on the trees along the shoreline too. Migrants like this Northern Flicker are beginning to come through in numbers.

March 24, 2022August 15, 2022

Photo of the Day

Birds of Conewago Falls in the Lower Susquehanna River Watershed: American Goldfinch in transitional plumage — A male American Goldfinch transitioning into breeding (alternate) plumage, it’s like a marshmallow peep coming to life on a dreary spring day.

March 22, 2022March 22, 2022

Seawatch on the Susquehanna

Birds that one might expect to see wintering among the surf and in tidal waters along the Atlantic coast are currently making their way up the Susquehanna on a route that will ultimately lead most to nesting sites in Canada. To see them as pass, one needs simply to find a good vantage point along the river from which to begin watching. Here are some of today’s sightings from the Veteran’s Memorial Bridge (Route 462) at Columbia/Wrightsville, Pennsylvania.