migrant arrival dates.

[Andy Burton <>]

There seems to be a general acceptance in the Aust / NZ birding world 
that global warming causes migrant  birds to arrive earlier.
Why don't migrant birds arrive later?

Any ideas?

Andy
===============================
www.birding-aus.org
birding-aus.blogspot.com

To unsubscribe from this mailing list, 
send the message:
unsubscribe 
(in the body of the message, with no Subject line)
to: 
===============================