Subject: Migration questions
Date: Oct 27 15:27:07 1997
From: "CHRISTINE W. MAACK" - 73201.3124 at compuserve.com


Gene Hunn, I don't understand this reference in your recent
post on Tropical Kingbirds:

>Couch's is restricted to the Gulf lowlands of Mexico s to the Peten of
Guatemala & Belize and exhibits limited migratory retraction from the
northern edge of its range in s. Texas.>

What is migratory retraction?

Somewhat along the same lines, can one use the word
"indigenous" of any species that migrate? If so, are they
indigenous to their breeding grounds, their wintering grounds,
or both?

Chris "Jargon-challenged" Maack
Anchorage, AK
CMaack at compuserve.com