Since Dec 14 we have been watching a very aggressive Red-breasted nuthatch at our feeder here (Roque Bluffs, Cow Point). This bird attacked the chickadees on and near the feeder. Then yesterday another RBNU showed up. We never saw the two together at the feeder, so I don't know how or if they interacted. This morning a RBNU in a spruce tree with several Black-capped chickadees was doing a call I have not heard before. It began with the usual "hank" but increased in speed and volume until it was very loud and sustained, with no breaks between the "hanks", like a machine gun (although I've never heard a machine gun, except in the movies, thank goodness). Then, around noon, I saw from our window a RBNU at the very top vertical twig of a young spruce. It was sitting on the tip of that twig, very straight and erect and flapping its wings rapidly up and down, as if it were doing the arm movements for jumping-jacks, or exactly like the toy wooden birds with a pull-string, which I always thought were impossibly unrealistic.
Is this territorial behavior?Maine birds mailing list
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