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Vagrancy in Birds: A Book Review

10,000 Birds

There are many more factors than I imagined: compass errors, wind drift, overshooting, extreme weather and irruptions, natural dispersal, and human-driven vagrancy. The chapter on compass errors will probably be the most popular amongst birders who love to discuss reversal and mirror-image migration routes. Don’t worry.

Birds 259
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Labor Day & Hummingbird Feeders

10,000 Birds

Some hummingbirds get off course–perhaps a young bird is hatched with an odd internal compass or has hit a window one too many times and heads east or north instead of south with the rest of the gang and you get odd ducks showing up in unexpected areas. Nectar that is offered now is a bonus on their southward journey.

Arizona 248
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Thrashing XXX

10,000 Birds

2 Responses to “Thrashing XXX&# thainamu Mar 8th, 2011 at 1:27 pm I heard and saw one of these recently when I went on a bird-watching vacation in southeast Arizona. OpticsPlanet - Great prices on binoculars for birding , spotting scopes , telescopes , flashlights , compasses & more! Jochen Mar 8th, 2011 at 6:53 pm Haaaaa!

2011 140