The blue-black grassquit (Volatinia jacaranda) is a small bird in the tanager family, Thraupidae. It was previously classified in the bunting and American sparrow family, Emberizidae.
The Blue-black grassquit have cone shaped black bills. The male is glossy blue-black, with a black tail and wings. The white inner underwing is visible in flight or display. Female and juveniles have brown upper parts and dark-streaked buff underparts.
The Blue-black Grassquit breeds from southern Mexico through Central America, and South America as far as northern Chile, Argentina and Paraguay, and on Trinidad and Tobago. It is the only member of the genus Volatinia. It makes a small cup nest, with a typical clutch of one to three pale green eggs blotched with reddish brown. Both sexes incubate for 9–10 days, with about the same period again for the young to fledge.
The male has a jumping display, often performed for long periods, which gives rise to the local name “johnny jump-up”. This is accompanied by a persistent wheezing jweeee call.
Diet for Black-and-white Seedeater:
Paradise Earth Premium Finch Blend. During breeding season they should be given live worms and egg food.