The tree swallow is the only swallow that is truly swallow tailed, meaning the tail is deeply split and has white spots. The adult is blue-black above; cinnamon-buff below, with a darker throat. Most ...

Tree swallow nests across Pennsylvania are being collected for an investigation into the patterns that the common, fast-flying, cavity-nesting birds might incorporate into their nest construction.

The tree swallow is typically a straightforward enough bird to identify, even for newer birders. With shiny, almost ...

Thousands of swallows are showing up in Connecticut these days during the birds’ fall migration to the Carolinas and Gulf Coast. The Connecticut Audubon Society says the Connecticut River is one of ...

Mating by birds — the passage of sperm from the male to fertilize eggs produced by the female — is quite unlike that of mammals. It begins with the male Tree Swallow, in this case, finding an ...

There are eight species of swallows in North America with seven species in Montana. The cave swallow is mostly found in Texas and Mexico. Tree, violet-green, northern rough-winged, bank, barn, and ...

ALONG BOULDER LAKE — Halle Lambeau had to duck just a bit when an adult tree swallow sprung for its next box and flew off, rattled by Lambeau’s effort to look inside the box for eggs. “You now have a ...

A new paper in Environmental Toxicology and Chemistry indicates high levels of exposure to "forever chemicals" in the ...

Two recent studies of tree swallows uncover long-term consequences of such passing but major stressful events. Both studies provide information on how major stressful events have lasting effects and ...