KEY TO THE WATER BIRDS OF FLORIDA. 185 



ORDER PYGOPODES. 



Diving Birds. 



Family PODICIPID.E. Grebes. 

 Genus COLYMBUS Linn. 



COLYMBUS AURITUS Linn. 

 Horned Grebe. 



Adult in sumtner : Upper parts, including back, wings, 

 top of the head and back of the neck, glossy black ; throat 

 black : front of the neck, breast, and sides of the body rufous 

 chestnut ; rest of under parts white ; wings dusky black ; 

 secondaries white ; lores dull chestnut ; the two small tufts 

 of feathers at the sides of the occiput brownish buff. 



Adult in winter and immature : Head and back gray- 

 ish, under parts white, usually ting-ed with gray on the breast 

 and lower throat ; no tufts on sides of the head in winter 

 plumage. 



Length, 13.40; Wing, 5.40 ; Tarsus, 1.70 ; Bill, .85 to .95. 



The Horned Grebe is not uncommon on the 

 Atlantic coast during the migrations, breeding 

 from the Northern United States northward and migrating in winter south to 

 Florida and the Gulf States. 



The nest is constructed on floating debris ; eggs, four to seven, dull 

 white or yellowish white. 



Range : " Northern Hemisphere ; breeds from United States northward." 



(A.O.U.) 



