Mike Keesey posted (facebook) this very cool people-speak translation as an experiment in communicating specific ideas “to laypeople without using words like Aviremiges and Ornithothoraces”.
Triceratops is a stem-bird but not a birdfoot. Carnotaurus is a birdfoot but not a birdfeather. Compsognathus is a birdfeather but not a birdwing. Velociraptor is a birdwing but not a birdflier. Confuciusornis is a birdflier but not a birdbody. Enantiornis is a birdbody but not a birdtail. Ichthyornis is a birdtail but not (quite) a bird.
Pete Buchholz chimed in:
The new birds are split into the beyond birds and the crown birds. The beyond birds are made up of dove forms and swift forms. Flamingos and grebes are admirable birds and are within the pigeon forms. The crown birds are made up of the-big-pelican-group and a clade of plover shapes and the-big-sparrow-group…....