COLYMB1D.E. 305 



355. Fratercula arctica (Linnaeus). The Puffin. 



Spanish. Frailecillo. 



" This species is found near Tangier from November to March, 

 sometimes even lingering as late in the spring as April and May. 

 They are more abundant than the Gannet, and are frequently 

 picked up dead on the sea-shore after stormy weather." Favier. 



I have seen Puffins in Gibraltar Bay as late as the 5th of 

 March, but never in such numbers as the Razor-bill. 



Bill shorter than head, higher than long; both mandibles arched (and in 

 summer grooved across with orange). 



Above black ; forehead and crown greyish brown ; black ring round 

 white throat; below white; axillaries brown; legs orange. 



In winter the bill is smaller and without brighter colour, the base of the 

 bill being shed in autumn. Length 12 inches. 



COLYMBIDJE. Females smaller than males. 



356. Colymbus glacialis, Linnaeus. The Great Northern 



Diver. 



Occasionally seen in winter in the Straits. 



Adult: spring. Head and neck black, with purple gloss; a band of white 

 stripes on throat, below which is another band of white stripes; bill black; 

 iris red. 



Winter. Above uniform blackish brown, more or less spotted with white ; 

 below white. Length 30-33 inches. 



357. Colymbus arcticus, Linnseus. The Black-throated Diver. 

 Occasionally seen in winter in the Straits. 



Adult : spring. Chin and throat Hack, with a purple gloss, divided by a 

 patch of white with black lines; iris red. 



Winter. Like last, but smaller. Length 25 inches. 



358. Colymbus septentrionalis, Linnaeus. The Red-throated 



Diver. 



This Diver is common in the Straits in winter, and I obtained 

 one specimen with a red throat. 



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