266 



ANIMAL LIFE 



oriole (Fig. 161). Not all birds make nests. On the rocky 

 islets of the northern oceans, where thousands of puffins 

 and auks and other maritime birds gather to breed, the 

 eggs are laid on the bare rock. At the other extreme is 

 the tailor bird of India, which sews together leaves by 

 means of fibrous strips plucked from a growing plant to 



PIG. 160. Nest and young of the Ruf us humming-bird ( Trochilus rufus). Photograph 

 by J. O. SNTDEB, Stanford University, California. 



