Alison
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I'm not sure what percentage of crows eventually breed compared to other birds. Crows live longer than many songbirds, so going to breeding "college" with familial support seems like an advantage. Whereas the local Chickadee only lives a few years and needs to breed in the first one.
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Some of my officemates look out onto a rooftop where crows destroyed a pigeon's nest and ate the babies, and they were put off crows. Now I can let them know that were we live (the northeast), squirrels and chipmunks are a much greater problem, and even ants and raccoons kill more baby birds than do crows. Obviously crows will take a snack when they see one, but baby birds are exposed to many risks and crows are a smaller part of that picture. Yes, I can now identify crows vs. ravens, thanks!
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