246. Yellow-rumped Warbler

Yellow-rumped Warblers are found here at Leaning Oaks in the spring and early summer and then essentially disappear for a month and then make an appearance on fall migration from mid-August until the end of September.  They may well be here, only silent in the canopies of the Douglas-fir or perhaps they move up in elevation during those months. The Yellow-rumped Warbler has two distinct colour forms that used to be considered separate species: the "Myrtle" Warbler of the east and "Audubon’s" Warbler of the mountainous West. The Audubon’s has a yellow throat; in the Myrtle subspecies the throat is white. Female Audubon's have less boldly marked faces, lacking the dark ear patches of the "Myrtle" Warbler.  We get both forms on migration, but the form that lingers here to breed is the "Audubon's" form.

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