On a murky day toward the end of February, I went with a friend on the Boy Scout Camp Trail. Rain and warm temperatures had turned the snow to unpleasant deep slush and puddles in some places. As ...

Do Tree Swallows Use Birdhouses? 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 ...

SAUKVILLE – Prairies are rich wildlife habitats. They are so bountiful, in fact, sometimes they even host species that evolved to breed elsewhere. For proof we need only look at two restored ...

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.

Warming temperatures from climate change cause tree swallows to nest up to two weeks earlier than they did in the 1970s, but early spring cold snaps can hinder nestlings' growth and survival, ...