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From Audubon.org
Here’s an interesting pattern: crested birds, in general, are not long-distance migrants. In the plover family, for example, the round-headed American Golden-Plover migrates from the high Arctic to the southern tip of South America, but the crested species of lapwings move much shorter distances. Some woodpeckers (like the Pileated) are crested, but the few woodpeckers that migrate notable distances (like Yellow-bellied Sapsucker) are not. In the cardinal family, the round-headed Scarlet Tanager flies to South America for the winter, while the crested Northern Cardinal is sedentary. Why the difference? As far as I can tell, it’s just coincidence. But it’s fun to think about.
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