Quote:
Originally Posted by always2late
I just watched a short doc called "Birders: The Central Park Effect." I had no idea that so many species of birds made a stop in Central Park during their migrations! Now I'm thinking that a trip to NYC is definitely in order!
|
Here's something I learned not long ago. Birds in Central Park (and presumably other urban centers, but the study was done in Central Park), are changing the frequency and other aspects of their song, in order to be heard over traffic, radios, and other forms of human racket. The male birds who are most easily heard are most likely to find mates, so there's a biologicial advantage in doing so.