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.