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Vagrancy in Birds: A Book Review

10,000 Birds

But it’s a very fluid definition, as the book makes very clear. There are many more factors than I imagined: compass errors, wind drift, overshooting, extreme weather and irruptions, natural dispersal, and human-driven vagrancy. internal compasses tied to the earth’s magnetic fields?

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Herpetology Vs. Ornithology

10,000 Birds

home about advertise archives birds conservation contact galleries links reviews subscribe Browse: Home / Asides / Herpetology Vs. Ornithology Herpetology Vs. Ornithology By Corey • March 2, 2011 • 4 comments Tweet Share If you like science and comic strips you definitely want to read xkcd. Thanks for visiting!

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A Question of Migration

10,000 Birds

It turns out that humans without compasses make no use of magnetic fields.) They conclude, provisionally, … that, perhaps apart from a capacity for night-time compass orientation, there is little evidence for deeply rooted coadapted trait complexes that could make up such a migratory syndrome, is suggested. Take homing pigeons.

Research 210
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On Letting Your Emotions Rule the Day

Animal Person

The veracity of this statement hinges on Scott's definition of "inhumane," and that definition must be very, very restricted, and clearly unrelated to the realities of our modern factory farm system. Paragraph #4 starts with: "Undeniably, neither I nor anyone I know advocates or even tolerates the inhumane treatment of farm animals."

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