North American Birds

VOLUME 69 No1 2016

A Quarterly Journal of Ornithological Record Published by the American Birding Association. The mission of the journal is to provide a complete overview of the changing panorama of our continent’s birdlife.

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Page 24 of 179

23 V O L U M E 6 9 ( 2 0 1 5 ) • N U M B E R 1 T H E M E N D O C I N O S H R I K E p9 r6 p9 p9 p8 r6 r6 r5 r5 r5 p8 p8 Figure 14. Wing and tail morphology of male Red-backed Shrike (a, b; AMNH 661158), Turkestan and Isabelline Shrikes (c, d; AMNH 661351 of Turkestan Shrike), and Brown Shrike (e, f; AMNH 106777 of nominate cristatus), in each case with juvenile primaries and rectrices. The p9 and r6 are proportionally longer in Red-backed Shrike, followed by Turkestan and Isabelline Shrikes, and then all subspecies of Brown Shrike (Table 1b). The r6 is proportionally narrower as compared to r5 in the Brown Shrike group than in the Red-backed, Turkestan, and Isabelline Shrikes. These diferences appear to be useful for identifying the Mendocino shrike (see text and Figures 15, 18-21). Photographs by Peter Pyle. 14d 14e 14f 14a 14b 14c

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