Barn Swallows are rare in winter, even in Mexico. They occur there in small
numbers (primarily in coastal lowlands) throughout the winter, but are not
conspicous until they starting migrating through in mid to late February.
So ... our birds are far out of the main wintering range. Tree Swallows
exhibit similar migration timing in Mexico, but peaking slightly earilier.
Mexico,.

Has anyone been able to get a handle on what ages our winter Barn Swallows
birds are - "eager" adults pushing the the northern boundaries, or simply
wandering juveniles, or ?????

Cheers,

Michael G. Shepard
North American Bird Information Web Site:
http://www.islandnet.com/~mgs/birds/
New Gull Pages (just started): http://www.islandnet.com/~mgs/birds/Gull.html
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