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 27 of 179

T H E M E N D O C I N O S H R I K E 26 N O R T H A M E R I C A N B I R D S Figure 16. Images of the Mendocino shrike taken 30 March (a), 3 April (b, c), and 4 April (d), indicating that the juvenile outer rectrix (r6) appears similar in width to other ju- venile and replaced formative rectrices. Juvenile rectrices are narrower than formative rectrices in shrikes and other passerines (Svensson 1992, Pyle 1997), further indicating relatively wide outer rectrices for the Mendocino shrike after accounting for age. Photo- graphs by Monte Taylor (a), Don Roberson (b, c), and Gary Woods (d). 16a 16b 16c 16d r6 r6 r6 r6 r6 r6 r6 r6 r6

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