Noticed Robin adding nesting materials and then turning in a circle around the whole nest. As it turned in circle it stops, rolls tail feathers down over outside edge of nest, brings both wings up and rapidly flutters in small movements. Then it proceeds to turn a bit once more and repeat motions. Each time it adds a beak full of dried grasses or long leaf it repeats the dance. It also looks like it is shaking but perhaps is stomping it's feet onto sides of nest to tamp down materials.
Latitude: 42.3 Longitude: -72.6
Observed by: K
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