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 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 ...

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

Caution is always the better part of valor when it comes to approaching a tree swallow nest box. If you don’t pay attention, you run the risk of being dive-bombed and potentially plunked on the head ...

Many backyard birders grow concerned when another species swoops into their bluebird boxes. A closer look at who’s moving in is warranted, since invasive species like house sparrows can harm and even ...

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 ...

Aerial insectivores--birds that hunt for insect prey on the wing--are declining across North America. Conserving vulnerable species such as these requires a good understanding of the factors impacting ...

A common sight at Faville Grove throughout the summer are the foraging flocks of Tree Swallows maneuvering above ponds, wetlands, and prairies to catch the aerial insects that comprise much of their ...

Wind and precipitation play a crucial role in advancing or delaying the breeding cycles of North American tree swallows, according to the results of a new study. Wind and precipitation play a crucial ...