Birdsong
Presents a detailed overview of birdsongs, including the different ranges and repertoires of various bird species, the mechanism by which songbirds pass their singing traits onto their offspring, and how songbird anatomy was formed through evolution.
Not available to read online
This scan is restricted to patrons with print disabilities and can't be borrowed with a regular free account — signing up won't unlock it. Try Toronto Public Library, Libby, or Amazon above instead.