FOUR STAGES IN THE DEVELOPMENT OK THE BILL OF THE 



FLAMINGO. 



.,j»***->'. 



;V#^'^{?5 



.. -rS?' 



Fig. 17.5. — Youno; bird in down. 



Fig. 176. — Young in gray plumage. 



Fig. 177. — Young in gray plumage, Later stage. 



Fig. 178. — Adult living bird. 



235 



