Wild Neighbors: The Baptista Tapes: Why Sparrows Change Their Tunes. Category: Columns from The Berkeley Daily Planet.
Thanks! This is an amazing article. I remember walking on Twin Peaks in the late 1980s, listening to the white-crowned sparrows. The trill at the end has changed since then – it’s less defined and more truncated. In fact, I feel that the whole song has become less clear.
I wonder if population density (hence, competition among the males) might also have something to do with it.
Fill in your details below or click an icon to log in:
You are commenting using your WordPress.com account. ( Log Out / Change )
You are commenting using your Twitter account. ( Log Out / Change )
You are commenting using your Facebook account. ( Log Out / Change )
You are commenting using your Google+ account. ( Log Out / Change )
Connecting to %s
Notify me of new comments via email.
Enter your email address to subscribe to this blog and receive notifications of new posts by email.
Join 93 other followers
main drive, 1899 (sf public library, historical photo collection)