Learn how to identify a male and female tree swallow. Find out about their nests, song, range map and what tree swallows eat.

Birds are usually very choosy about where to put their nests. Some species prefer a site right next to a tree trunk where the nest is supported by small side branches, while others favor the ends of ...

The general trend in Marin bird migration is for most of winter’s abundant shorebirds and waterfowl to head north each spring, soon replaced by a variety of mostly insect-eating songbirds from Mexico ...

Cliff swallows are said by ornithologists to show the highest degree of colonization of any of the 89 swallow species in the world. Colonies can number from 200 to more than 2,000 nests. They could be ...

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 ...