Squirrel's beat out bushtits, I think, in terms of recycling. In part because they take over and rennovate abandoned crow nests and in part--because they are larger--they are able to be more omnivorous in their nesting material options.
Yesterday's bluster brought down part of a squirrel's nest from a conifer to the sidewalk, in two big chunks. If you didn't know what a squirrel's nest looks like, you'd walk right by it. But I squatted down and poked at them with a stick, to see what materials they utilized. In addition to the expected (leaves, twigs, moss), there were scraps of canvas (maybe from a bag?) and shreds of newspaper.
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