patricia t oconnor said bird songs changed over time (less than 100 years i believe). she cited the thrush. this is all i could find that relates to her statement.


- bill 4-21-2010 6:42 pm
back to treehouse

This of late.
- alex 4-21-2010 11:39 pm [add a comment]





add a comment to this page:

Your post will be captioned "posted by anonymous,"
or you may enter a guest username below:


Line breaks work. HTML tags will be stripped.


[home] [subscribe] [login]