PhysOrg Posted December 7, 2018 Share Posted December 7, 2018 As a birder, I had heard that if you paid careful attention to the head feathers on the downy woodpeckers that visited your bird feeders, you could begin to recognize individual birds. This intrigued me. I even went so far as to try sketching birds at my own feeders and had found this to be true, up to a point. View the full article Quote Link to comment Share on other sites More sharing options...
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