About six years ago, during a hard winter, 4 crows showed up at one of my feeding stations; two adults and two juveniles. They made it noisily clear that they needed some food and so I fed them! So for the last six years I have fed anywhere from 4 - 50 crows an early morning snack. And then they go away until the next day. Yes, they are noisy but a tree full of crows is a lovely sight! As yet, however, I have not received any gifts in return! Still waiting!