The Tree swallow is a small passerine common throughout much of North America. Both males and females have iridescent deep blue-green-brown heads and backs with white undersides, although young ...

Hannah Konkel ’20 with tree swallow fledglings on Kent Island. The island’s tree swallow population has collapsed as immigration from the mainland has declined. Birds that hunt for insects in mid-air, ...

HELEN J. ROBINSON, TREE SWALLOW HABITS AND BEHAVIOR AT BREWER, MAINE, Bulletin of the Northeastern Bird-Banding Association, Vol. 3, No. 4 (October 1927), pp. 89-93 ...

A new method to mark sperm transfer events between birds, using microspheres inserted into males' cloacae, was employed to assess the frequency of extra-pair copulation (EPC) in a population of tree ...

What turns on a tree swallow may someday help people fight off diseases. The better looking a male tree swallow is, the more effective his immune genes are, and the more likely his offspring will ...