PLATE 41 



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

 (a, May 27, 1916 j ft, c, July 3, 1916). 



a. Adults, in altercation. 



b. Downy young, newly hatched. 



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



See text, p. 249. 



[7161 



