I 10 



VERTEBRATES: BIRDS. 



Fig. i6o. — Canvasback. 



regions. Eider down comes from the nests ; the birds 

 pluck it from their breasts to place around the eggs. 



Albatrosses and Petrels. 



The Albatrosses are the largest of web-footed Birds. 



Fig. i5i. — Sooty Albatross. 



