Figure 4. Ash-throated Flycatcher. Left: Ventral view of tail missing left R6 (bird's left) - note the dark outer web prominent on R5. Middle: Dorsal view of same tail - from above, missing R6 is not conspicuous. Right: Ventral view of tail with new R6 growing in.
Myiarchus Figure 4 by Donna L. Dittmann - LOS News - December 2000
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