Date: 11/10/17 6:29 am From: Tom Brownrigg <brownriggs...> Subject: [MASSBIRD] a chickadee comforter?
Yesterday while cleaning out nest boxes at Towle field (Carlisle conservation land), I found something interesting. A box with no previous nest had a big wad of green moss with feathers mixed in. I wonder if it was made by a chickadee as an insulated winter roost. I have seen moss in chickadee nests, and the feathers resembled those of a chickadee.
Also, a few of the boxes had caterpillars on the top of the roofs. The caterpillars were not moving, but it was still cold from the previous night. I saw bluebirds perched on the boxes and wondered if they had put the caterpillars on top of the boxes to warm up - like using a microwave oven for heating up your doughnut.