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.

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 ...

From purple martins to barn swallows, find out how to spot and identify 8 members of the swallow bird family during summer.

Journal of Avian Biology, Vol. 44, No. 4 (JULY 2013), pp. 305-310 (6 pages) The nest environment can have important influences on incubation behavior and nestling development in birds. Nest thermal ...

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 ...

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. A minute’s walk up the East Gallatin Recreation Area Trail from Glen Lake Rotary Park, tree ...

Recently, I had the pleasure of going birding at Brazos Bend State Park with friends. One of our first sightings of the day was a flock of what had to be at least 500 tree swallows congregating on a ...

Nesting in a cavity — a hole in a tree, a burrow in a bank, or another enclosed space—gives a bird significant advantages. Cavity nests are generally safer than open-cup nests. The nest contents are ...

For Wildlife Recovery Association's Barb Rogers, tree swallows are swift, smart and stunningly beautiful. However, there is a lot more to them. Their irridescent colors of blue and green flash in the ...

PEN New England Award–winner and naturalist Heinrich (Life Everlasting: The Animal Way of Death) again translates his painstaking fieldwork into a fascinating narrative. Heinrich became interested in ...

The swallows have started to gather on Plum Island and they will reach their peak by mid-August. Along the Parker River Wildlife Refuge, they feed on the bayberry on the dune side of the road, and the ...