Smithsonian Report, 1911.— Keyes. 



Plate 5. 



Fig. 1. -March 16, 1907; where the Dead are More in Evidence than the Living; Owlets 4, 



6, and 8 Days Old. 





Fig. 2.— March 30, 1907; Owlets 18, 20, and 22 Days Old. 



