Magnolia warbler
Chapter 4: How a Bird Gets Its Song
Subchapter: Learned songs of songbirds, and babbling
From page 54 in the book.
Photo by John Van de Graaff
♫180. Adult song, a sure thing, with a certain structure, weeta-weeta-weetsee, repeated over and over. June 23, 2012. Westmanland, Maine. (3:37)
♫181. Plastic song by spring migrant. May 19, 2012. Parker River National Wildlife Refuge, Newburyport, Massachusetts. (6:47)