VERTEBRATA 



I6 5 



2. Impennes, or penguins. These birds, found only 

 in the southern hemisphere, have many of the structural 

 features of those in the preceding order, but their wings 

 are so rudimentary that flight is impossible (Fig. 142). 



3. Turbinares, the albatrosses and petrels (largest and 

 smallest of web-footed birds), having a hawklike, hooked 

 bill and the nostrils opening through tubes. The wan- 

 dering ^albatross inhabits the southern seas but some- 

 times comes as far north as Florida. It measures twelve 

 to fourteen feet from tip to tip of its wings. Wilson's 

 petrel (Oceanites\ one of the smallest of the many 

 species, is known to the sailor as " Mother Carey's 

 chicken." The birds 



in this order are noted 

 for their powers of 

 flight. 



4. Stega no p odes, 

 characterized by a 

 long bill, generally 

 hooked ; wings rather 

 long ; and toes long, 

 and all four joined to- 

 gether by broad webs. 

 Throat generally na- 

 ked, and furnished 

 with a sac. The ma- 

 jority are large sea- 

 birds, and feed On FIG- 143- Cormorant (Phalacrocorax). Copy- 



right, 1901, by N. Y. Zoological Society. 



fishes, mollusks, and 



insects. Examples are the cormorants, pelicans, gan- 



nets, and frigate bird (Fig. 143). 



5. Herodiones. The herons, bitterns, storks, ibises, 

 spoonbills and flamingoes are included in this order. 

 (Fig. 144). They are readily distinguished by their 

 long and bare legs. Generally, also, the toes, neck, and 





IP* 



