Sapeornis, bird from dinosaur age in China

This 2019 video says about itself:

Avialae. The evolution of birds.

Sapeornis chaoyangensis is a fossil bird, from the early cretaceous period in China, somewhat later than Archaeopteryx in Germany.

Eoconfuciusornis, a primitive confuciusornithid bird from China: here.

Life history of a basal bird: morphometrics of the Early Cretaceous Confuciusornis: here.

Dinosaur and bird genomes: here.