American redstart
Chapter 4: How a Bird Gets Its Song
Subchapter: Learned songs of songbirds, and babbling
From page 53 in the book.
Photo by Brian E. Small
♫178. Song, with five different songs used during the dawn chorus (up to 3:00), followed by five renditions of the one song that this male reserves for other singing contexts (after 3:00). June 1, 2017. Cricket Hill, Conway, Massachusetts. (3:38)
♫179. Plastic song by spring migrant, a yearling, his age revealed by his "yellowstart" plumage. May 19, 2012. Parker River National Wildlife Refuge, Newburyport, Massachusetts. (4:32)