About the Map The animated map shows the Yellow-rumped Warbler's predicted distribution and relative abundance across all 52 weeks of the year. Sources include the Cornell Lab of Ornithology and National Audubon Society. Brighter colors indicate higher relative abundance. The two were merged in 1973, but recent studies suggest that genetic differences among populations warrant the species being split into as many as four new species– adding three new entries to the meticulous birder’s life list. Of interest to taxonomically-inclined birders is the fact that this warbler was once two– and may yet become four! Until about forty years ago, the bird now known as the Yellow-rumped Warbler was recognized as two separate species, the “Audubon’s” and “Myrtle” warblers. The Yellow-rumped Warbler is uniquely able to digest these berries, allowing it to survive in climates that would send other warblers packing for Guatemala. The waxy coating of myrtle berries is high in fat and energy, but is indigestible to most birds. I kinda have the map in my head, but it’s faint.
Yellow Warbler distribution in North America. you might be in Summer breeding territory But I’m not sure. The most common warbler breeding this far north, the Yellow Warbler can be heard singing. In the northern part of their winter range, these birds are sustained by the berries of the bayberry or wax myrtle. 27 thoughts on Yellow-rumped Warbler Joanne Sisco says: Apat 4:07 pm. The warbler’s success is attributable in large part to its diet, transitioning easily from protein-rich insects to comparatively less nutritious berries in lean times. The Yellow-rumped Warbler is a notable exception, found in great numbers across the southern and eastern United States each winter and as far north as Newfoundland. Posted on OctoCategories: Bird of the Week, Signal Smoke Homeįew warblers deign to spend the winter months in North America, preferring the warm climates and easy meals of the tropics.
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