> I hope that helps you out somewhat?
>
> Cheers!
> Libor

Sure! Now I have three answers:

1) A bird that migrates below the Mexico/US border,

2) A bird that overwinters between the Tropics of Cancer and Capricorn,
regardless of whether it breeds in North or South America

3) > Passerines are commonly known as neotropical migrants. A Neotropical
> migrant is characterized as a bird which breeds in the Nearctic (North
> America) and winters in the Neotropics (South America) but has its
> evolutionary origin in the Neotropical zone.

With definition 1, the Upland Sandpiper is a Neotropical migrant (NM),
but is not by definition 2 (winters in the pampas of Argentina) or 3 (not
a passerine).

Any other opinions, or is this an unresolved issue?

Kelly Cassidy -- Washington Cooperative Fish and Wildlife Research Unit
Box 357980, University of Washington, Seattle, Washington, 98195
kelly at u.washington.edu --- 206-685-4195 --- 206-368-8076