Last week, we saw over  about 5000 crows in a 10 mile stretch of I77  heading toward Cambridge. I found a website that discussed this winter behavior. It said 1000s or 10,000s of crows will fly to a roosting site near a town or city at dusk  because the ambient air temperature is warmer due to heat loss from buildings, Early in the AM, the crows will fly off to their regular hunting gounds and return the next dusk to roost.  This makes sense, as crows are very smart.


Thais & Drue tepper

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