THE BLACK-CAPPED PETREL 



257 



The Black-winged Petrel. 



Q^strela ta n igrijjeiinis. 



Upper surface slaty grey, the crown mottled with black. Forehead 

 and spot over the eye white. Under surface white, the sides of the 

 breast slaty grey. Under surface of the wings white, with a dark brown 

 border. Length of the wing, 8.7 inches; of the tarsus, 1.2 inch. Kermadec 

 Islands. 



Grey-faced Petrel. 



(After Smith.) 



The Black-Capped Petrel. 



Q^strelata cervicalls. 



Upper surface greyish black. The crown of the head and nape, rusty 

 black. Under surface and front, white. Tarsi and basal part of the 

 feet, yellow; the tips black. Length of the wing, 11.5 inches; of the 

 tarsus, 1.5 inch. Egg — 2.o inches in length. Kermadec Islands. 



This petrel arrives about the end of September, and remains 

 until the end of June. It is one of the last petrels to leave the 

 Islands. It is solitary in its habits, and very seldom can two 

 nests be found in the same locality. Its breeding-place is usually 

 near the mountain-top, in some dark g'ully filled with palms and 



