North Carolina Zoo: Bird ID

Sorry for image quality, this was as close I could get to the cages. There were three birds hopping around in individual cages used to habituate new animals to the Aviary. They had light green bodies with yellow bellies, black faces, silver throats, and pale yellow bills. I thought they might be a species of barbet but I'm not sure.

Collared Finchbill (Spizixos semitorques)

@Bosjesman That's it, thanks. Any idea how common they are in American zoos?

No idea, but they are very rare in european zoos