> notable for having chicks that have claws on two of their wing digits.
> In 2015, genetic research[5] indicated that the hoatzin is the last surviving member of a bird line that branched off in its own direction 64 million years ago, shortly after the extinction event that killed the non-avian dinosaurs.[6]
https://en.wikipedia.org/wiki/Hoatzin
> notable for having chicks that have claws on two of their wing digits.
> In 2015, genetic research[5] indicated that the hoatzin is the last surviving member of a bird line that branched off in its own direction 64 million years ago, shortly after the extinction event that killed the non-avian dinosaurs.[6]