Confuciusornis, the "Confucius
Bird," is a well-documented
genus of animals from the Yixian and
Jiufotang Formations in China. With
a length of fifty centimeters and a
wingspan of seventy centimeters, the
confuciusornis was not very
different from modern birds. It was 
one of the earliest birds known to 
have a toothless beak, despite 
being closely related to more recent
birds possessing teeth. The wing 
feathers also appear modern but have
different structure compared to
modern birds. Fossils of its wings
include many melanosomes, cells that 
contain pigment; because of this, we 
know the likely colors of the 
confuciusornis were grey, red/brown, 
and black, similar to the zebra 
finch. The wings were probably white
with the long tail feathers being 
dark along their entire length. 

The confuciusornis suffered from 
limitations during flight, such as 
limited wing amplitude and
insufficient feather strength, and
these findings challenge the
conventional belief that confucius-
ornis was a competent flier. 
Fossils of confuciusornis, similar 
to compsognathus, show the contents
of its belly. Confuciusornis was 
piscivorous, catching and feeding
upon small Cretaceous fish with its 
beak. It commonly fell prey to 
small- and medium-sized carnivores, 
such as sinocalliopteryx.
