*74 



BEGINNERS' ZOOLOGY 



Moulting. — How do birds arrange their feathers after 

 they have been ruffled ? Do they ever bathe in water ? 







Fig. 318. — Al'TEKYX, of New Zealand. Size of a hen, wings and tail 

 rudimentary, feathers hair-like. 



In dust ? Dust helps to remove old oil. At what season 

 have birds the brightest feathers? Why? Have you ever 



Fig. 319. — Golden, Silver, and Nobi.f. Pheasants, males. Order? 

 (Key, p. 177.) Ornaments of males, brightest in season of courtship, are due to 

 sexual selection (Figs. 321-7-9, 333). 



seen evidence of the moulting of birds? Describe the 

 moulting process (page 120). 



