American tree sparrow
Chapter 5: More about Song Learning
Subchapter: Song (and call) dialects
From page 66 in the book.
Photo by Wil Hershberger
Dialect 1. First is a composite recording in which you hear only one song from each of three individuals (♫271); longer recordings are available from each of those individuals (♫272, ♫273, ♫274). June 13, 2017. Mile post 11, Denali Highway, Alaska. (0:17, 5:32, 1:47, 0:56)
♫271—one song from each of three individuals
♫272, ♫273, ♫274—longer recordings from those three individuals
Dialect 2. Same format as for dialect 1: composite recording (♫275), and longer recordings for the three individuals (♫276, ♫277, ♫278). June 13, 2017. Mile post 18, Denali Highway, Alaska. (0:19, 1:26, 2:43, 2:06) ♫276 recorded by Janet Grenzke
♫275—one song from each of three individuals
♫276, ♫277, ♫278—longer recordings from those three individuals
Dialect 3. Just two males: composite recording (♫279), and longer recordings for each of the two individuals (♫280, ♫281). June 13, 2017. Mile post 34, Denali Highway, Alaska. (0:12, 0:22, 1:13)
♫279—one song from each of two individuals
♫280, ♫281—longer recordings from those two individuals