138 YELLOW-BEAKED SKIMMER. 



weather. The young are at first so exactly of a co- 

 lour with the sand on which they sit, as to be with 

 difficulty discovered : they are several weeks before 

 they fly, during which time they are assiduously at- 

 tended by the parents : when the young are able to 

 leave, they depart to other countries, but rarely pro- 

 ceed far out to sea. 



YELLOW-BEAKED SKIMMER. 



(Rhynchops flavirostris.) 



Rii. corpore supra cinereo-Jiisco, sabtus albo ; rostro Jlavo ; pe- 



dibusfuscis. 

 Skimmer with the body above ashy-brown, beneath white., the 



beak yellow, the legs brown. 

 Rhynchops flavirostris. Vieil. 2 Edit, du Nouv. Diet, d' Hist. 



Nat. t. in. p. 358. 



This bird has the forehead, the throat, all the 

 under parts of the body, the tips of the upper wing- 

 coverts and secondary quills white : the rest of the 

 plumage is ashy-grey. Inhabits the rivers of Senegal 

 and Gambia. 



