298 WILD-FOWL AND SEA-FOWL OF GREAT BRITAIN 



In the young the bill is lig'ht grey blue, dusky 

 along the ridge, and whitish at the base of the 

 lower mandible ; iris brown. The upper part of 

 the head and the hind-neck are a dark greyish- 

 brown ; the cheeks greyish-white, finely streaked 

 with dusky ; fore-part of the neck greyish-white, 

 faintly dotted, its sides below streaked with brown. 

 The upper parts of the body are brownish-black, 

 the feathers having broad light grey margins. The 

 hind-part of the back is a dull brownish-grey, the 

 tail feathers are dusky, margined with grey. The 

 quills are brownish-black, the secondaries being a 

 lighter tint, margined with grey. The lower parts 

 of the body are pure white ; the feathers on the 

 sides and some of the lower tail coverts are dusky, 

 edged with bluish-grey. The legs and feet are a 

 dusky grey, paler on the inner side. 



THE RED-THROATED DIVER. 

 {Colymbus seJ>tentrionalis.) 



Male. — The bill is bluish-black, tv/o inches and 

 a half in length ; iris bright red. The sides of 

 head, neck, and throat are bluish-grey, the upper 

 part of the head being marked with small dark 

 spots. The nape, hind-neck, and lower parts of it 

 are streaked with black and white. On the fore- 

 part of the neck is a lengthened broad band of 

 orange red. The upper parts are brownish-black, 

 glossed with green, without any white spots. The 

 lower parts are a glossy white ; the sides greyish- 



