How much bird is there, anyway?
10,000 Birds
JULY 21, 2011
What can be said is that among the vertebrates we see around us as we go on our birdwatching expeditions and nature walks, or visits to the retired professor, is this: Above a certain size, birds are small, numerous, and evenly distributed compared to mammals, while below a certain size mammals are small and hiding in the dark compared to birds.
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