Vocal and plumage variation in the Bewick’s wren is extensive ... buzzier. Songs of birds in the interior subspecies-group (ero­moph­ilus group) are simpler than those from the far West ...

Migration: most birds in North America migratory. Major spring movement follows that of the winter wren; major fall movement precedes that of the Winter. Winter: generally as breeding, but with ...

Arizona's state bird fends for itself against predators in the desert, making its home in prickly plants. Here's what to know ...