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Vagrancy in Birds: A Book Review

10,000 Birds

per cent of individuals of a species at a given time” and a vagrant bird as a bird that shows up outside of this range (p. There are many more factors than I imagined: compass errors, wind drift, overshooting, extreme weather and irruptions, natural dispersal, and human-driven vagrancy. other compass senses like the stars?–and

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Labor Day & Hummingbird Feeders

10,000 Birds

I know humans as a whole are a powerful species, but really, we do not have that much control over hummingbird migration ( Trumpeter Swans , maybe, but not hummingbirds). Some of the unusual species we’ve documented here in Minnesota in the fall include Magnificent Hummingbird (above), Costa’s Hummingbird and Green Violetear.

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Thrashing XXX

10,000 Birds

In the right season, with a little luck, we often find it, and sometimes it perches high and long enough that we can admire its scimitar of a bill, its stern face pattern, and even the patch of rusty red on the undertail that gives the species its English and its scientific names. I had no idea I should have been embarrassed.

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