I like your crow shelf! And the two colorful silhouettes! Crows are so observant. I enjoy seeing them, but not quite so much right after I've planted my garden. I've had them pull out my little corn plants, lol. A pair of crows made a nest in my neighbors huge American Elm a couple years ago. That was the loudest family of birds I have ever heard, especially when the young ones were supposed to learn to find food on their own. It was a fun summer watching them -- and hearing them, too! Enjoy all your crows! :D
They seldom come into my yard, I suspect the surrounding trees and underbrush are too dense for them to feel safe, but very noisy flocks will occasionally stop along the river banks. There are lots of them in town...must be easier food sources! The geese are the noisy ones at my house. I swear, they must never all sleep at the same time!