This pair is the one I've been observing for a few years. Despite the general impression that all crows look alike, individual crows are all so different with unique physical characteristics, only if you observe them closely. For example, in the female of this pair, her tail feathers are partially leucostic. And, the feathers covering her nostrils are ruffed up and looking like a rump probably because they have curles. These characteristics seem to be genetic and do not change from year to year.
From this photo, you can see that the male is larger and has more developed wing muscles than the female.
There are of course individual differences in body size and considerable overlap between sexes, so that you may not be able to tell apart a large female from a small male. Size alone is not a good indicator. However, the well-developed wing musculature and thicker neck line are good indictors that it is a male.
From this photo, you can see that the male is larger and has more developed wing muscles than the female.
There are of course individual differences in body size and considerable overlap between sexes, so that you may not be able to tell apart a large female from a small male. Size alone is not a good indicator. However, the well-developed wing musculature and thicker neck line are good indictors that it is a male.
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