154 



THE CONDOR 



Vol. XIX 



pinyon about three feet from the trunk and nine feet above the ground. It is 

 better made and bulkier than any of those found last year. 



"The stomach of the female contained particles of small mammal bones, 

 about 35 per cent, vegetable matter, 35 per cent, beetles or insects, 10 per cent, 

 gravel, 10 per cent, and small rodents' teeth, 10 per cent. The particles of bone 

 and teeth very likely were disgorged by an owl. ' ' 



Upon receipt in Denver of the nest, bird and eggs taken in 1916, the eggs 

 were at once prepared, but the shells of two of them, just ready to hatch, were 



Fig. 53. Nest and eggs of Clarke Nutcracker. 



5/8 NATURAE SIZE. 



Same set as tx fig. 52, about 



so thin and fragile they could not be saved intact. They were the thinnest 

 and most fragile shells of their size I ever encountered, but whether character- 

 istic of the species or solely due to advanced incubation I cannot say. The 

 third egg, being rotten, was saved intact. 



The Nest: Outside structure composed of old dry gnarled sticks and 

 twigs of cedar, of varying sizes, securely bound together with strips of cedar 

 bark. Walls approximately two inches thick, woven exceptionally tight. The 



