208 NYROCA NYROCA 



the Tufted Duck have been recorded. In captivity it has been crossed with the 

 Carolina Duck, and with the Red-crested Pochard (Suchetet, 189G; Poll, 1911). 

 In regard to this last-named cross Mr. Blaauw (in Hubbard, 1907) says: "This 

 species readily produces hybrids with the Red-headed Pochards, and if a hybrid of 

 this union is again mated with a White-eyed Duck, the offspring is scarcely to be 

 distinguished from pure Nyroca leucophthalma (White-eye)." 



