V 





/>V Old Series, ) Continuation of the ( New Series, 



•X Vol. XXXVI \ Bulletin op the Nuttall Ornithological Club ( Vol. XXVIII. 



The Auk 



H <&uarterl\> 3ournal of ©rnitbolcw 



editor 

 J. A. ALLEN 



associate editor 

 FRANK M. CHAPMAN 



VOLUME XXVIII 



PUBLISHED BY 



The Ame 







rican Ornithologists' Uhion ^g^n 



CAMBRIDGE, MASS. 

 1911 





Entered as second-class mail matter in the Post Office at Boston, Mass. 



