104 
BIRDS OF DURHAM 
AND VICINITY. 
Order PYGOPODES. 
Cepplius mandtii. Maxdts Guillemot. 28. 
This guillemot, which is hardly more than a northern race of the 
Black Guillemot, or Sea Pigeon, breeds from Labrador and Hudson 
Bay northward, and appears off our coast in winter. 
Uria troile. Murre. 30. 
This species is similar to Briinnich's Murre in size, but the length 
of its bill is not less than three times its depth at the nostril. It is a 
scarce winter visitant off our shore. 
Order LONGIPENNES. 
Meg-alestris skua. Skua. ^ 35. 
A rare comer from polar regions. 
Stercorarius pomarinus. Pomarlxe Jaeger. . 36. 
This jaeger has a more northerly distribution than the Parasitic, 
but it ought to be seen occasionally by those who follow the sea in 
winter. 
Stercorarius longicaudus. Long-tailed Jaeger. 38. 
This is another species likely to be run across at intervals by any en- 
terprising naturalist who will take ship in cold weather. The last 
three species are to be distinguished from gulls by their dark brown 
color, though to separate them from one another without shedding 
blood would be a more difficult matter. 
Larus leucopterus. Iceland Gull. 43. 
This species is said to be similar in size and coloration to the Her- 
ring Gull, except that the tips of its wings are black. It is a rarity 
from the far north. 
Larus kumlieni. Kumlien's Gull. 45. 
Very little is known about this gull. It is a winter visitant, equal 
in size to the Herring Gull, has the tips of its wings white, and its 
feet and legs are pink. 
