Figure 6. Inner secondaries ("tertials") are conspicuously pale-edged on all species: A - Brown-crested; B - Ash-throated; C - Great Crested (fresh feathers); D - Great Crested (worn feathers). Note: on Great Crested, the pale edge is broadest on the top feather. This pattern is still fairly obvious when the feather is worn (D).
Myiarchus Figure 6 by Donna L. Dittmann - LOS News - December 2000
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