Michelle

This isn't an answer to the above question, but I wonder why crows don't reuse their nests in upstate New York? I've had the privilege of getting to know my backyard crows (in Red Deer Alberta, Canada) for the last 15 years. I feed them and they sometimes leave "sparkly treasures" for me :) I noticed one of the crows is getting white feathers on it's left wing like JG in the study so I assume it is age related.