PLATE 41 



California Gulls on Paoha Island, Mono Lake. Photographed by Joseph Dixon 

 (fl, May 27, 1916; h, c, July 3, 1916). 



a. Adults, in altercation. 



&. Downy young, newly hatched. 



c. General view, with many partly grown young herded off-shore by the old birds. 



See text, p. 249. 



[716] 



