North American Birds Eggs. 

 26. Craveri Murrelet. Brachyramphus craveri. 



17 



Ranee. — Both coasts of Lower California, breeding chieHy on the Gulf side. 

 Craveri Murrelet is very similar to the last except that the under surfaces of the 

 wings are dusky. Breeds on the islands near Cape St. Lucas, burrowing in the 

 ground as do most of the others of this species. They lay a single egg, the 

 ground color of which is buff ; they are quite heavily blotched with brownish. 

 Size 2.00 X 1.40. 



27. Black 



grijlle. 



Guillemot. CrjijiJius 



'■*". ^ ,-. Range. — Coasts and islands of 



' : ' the North Atlantic, breeding from 



• ' * .% Maine northward to southern 

 ' . >' Greenland. Guillemots are larger 



% • . , - birds than the Murrelets (length 



■^ . ■ ■ fr 13 inches) and their plumage is 



' - .^ entirely different. This species in 



' . ^ ■"/ summer is entirely black exceptthe 



'; ^ wing coverts which are white. The 



■^,' :.- bases of the greater coverts, how- 



ever, are black, this generally break- 

 niuish white.] ing the white mirror as it is 



called. The under surfaces of the wings are white. Legs red. These birds 

 breed abundantly on the rocky islands and high cliffs along the coast. Soon 

 after the first of June the eggs are laid in the crevices of the rocks and sometimes 

 upon the bare ledges. Two or three eggs make the set. The ground color is a 

 pale bluish or greenish white and the markings are various shades of brown and 

 black. Size 2.40 X 1.60. Data.— Grand Manan, June 15, 1896. Two eggs laid in a 

 oavity back of large boulder. No nest. Collector, D. H. Eaton. 



28. Mandt Guillemot. Cepphus mmxltii. 



Range.— North Atlantic coast, more northerly than the preceding, breeding 

 from Labrador to northern Greenland. 



The bird differs from the Black 

 Guillemot only in having the 

 bases of the coverts white also. 

 The nesting habits and eggs are 

 identical. They nest in colonies 

 of thousands and place the eggs 

 upon the bare rock with no 

 attempt at nest building. Gen- 

 erally the eggs are in the crevices 

 so as to be difficult to get at. 

 Size 2.30 x 1.55. Data.— Depot 

 Island, Hudson Bay, June 6, 1894. 

 Two eggs laid on bare rocky 

 ground. Collector John Comer. 



3 





[(irayish white.. 



V- w 





