IG 
COLYMBID.E. 
The difference between the male and female is chiefly in 
their comparative measurements, and a very slight variation 
in the depth of colouring. 
The young birds are ash-coloured on the upper parts of 
the head, from the beak to the nape; the chin, throat, and 
sides of the head white; the rest of the upper parts dusky; 
the front of the neck and all the under parts are pale dusky ; 
the beak dusky; the base of the under mandible and the tip 
horn white; the legs and feet are dusky, and paler on the 
inner parts ; eyes are paler in their tints. 
The second figure in the plate represents the adult in 
winter plumage. 
The egg figured 274 is that of the Sclavonian Grebe. 
