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Pine Siskins are very small songbirds with sharp, pointed bills and short, notched tails. Their uniquely shaped bill is more slender than that of most finches.
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feeds in a frenzied manner at feeders before a storm
male feeds its mate as if she were a nestling when she is warming the eggs
male may contribute materials to build a nest, but he leaves the actual construction to his mate
is the only bird of its type that gains its breeding plumage by moulting, or shedding and growing feathers
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