On a twilight run tonight to the Lakeshore Preserve I took some time to watch robins and mourning doves busily searching for food in the open creek near the trail entrance on University Bay. When I walked through the snow to get a closer view, I found many small piles of feathers, including this one, which shows that half of a robin's chest feathers are gray and they are much longer than they appear on a live bird. These are just an inch long, but there were also long, dark flight feathers lying around that are 3-5 inches long. I didn't find any bones and believe this could be the work of a raptor (owl, hawk, falcon) or a stealthy fox or weasel.
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