76 



ANIMAL BIOLOGY 



thrush family. The total number of species of the perching birds is 

 far greater than that of all other species taken together. We shall 

 now group together a few of the more closely related orders, and 

 discuss somewhat their characteristic adaptations of structure. 



Fig. 61. — Flamingoes. (Photographed in N. Y. 

 Zoological Park, by E. R. Sanborn.) 



68. Webfooted birds (swimming birds). — In this group we 

 include several orders of birds that have webbed feet, which fit them 



