[Moonman62]

As the article points out, birds are considered dinosaurs these days.

[Jamestown1630]

Yes, but there seem to be other opinions.

[EinNYC]

This early bird reminds me of the present-day bird species called the hoatzin. This bird lives in South American river areas. As a chick, the hoatzin has claws on the leading edge of its wings to help it climb until its wings grow strong enough as an adult. Then the claws disappear. Here is a drawing of an adult hoatzin and a chick with its claws.