NOKTH A:\[EKICAN RlKDS EgGS. 



17 



26. Craveri Murrelet. Hi-(iclii/r<(iiiitlnis crarrri. 



Kan tre. — Both coasts of Lower California, l)r<'e(lin,ti: chiefly on the Gulf side. 

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

 wini^s are dusky. Breeds on the islands near Cape 8t. 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 heavilv blotched with brownish. 

 Size 2.00 X 1.40. 







2 7. Black Guillemot. Crpphuft 



(jri/llc. 



Range.— Coasts and islands of 

 the North Atlantic, breeding from 

 Maine northward to southern 

 ♦ Greenland. Guillemots are larger 



Idrds than the Murrelets (length 

 13 inches) and their plumage is 

 entirely different. This species in 

 summer is entirely l)lack except the 

 ^ wing coverts which are white. The 



bases of the greater coverts, how- 

 ever, are black, this generally break- 

 ing the white mirror as it is 

 called. The under surfaces of the wings are white. Legs red. These t)irds 

 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, l.S!t6. Two eggs laid in a 

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





llluisih white, i 



? 



28. Mandt Guillemot. Ccpjihiis iikhuUH. 



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. 



< traxish white.] 



