Crows are able to look at a handful of four-sided shapes and correctly distinguish those that exhibit geometric regularity from those that don't, according to a provocative new study. It's the first ...
Outdoor Guide on MSN
What's the difference between a crow and a raven?
Chances are, you've seen large, jet-black birds on lampposts or grabbing food off a road. Whether it's a crow or a raven ...
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