Incisivosaurus

Incisivosaurus (name meaning "incisor lizard") was a genus of small feathered dinosaur that lived in China during the Early Cretaceous period.

Portrayal in the series
As suggested by its name, Incisivosaurus possessed a pair of protruding, rodent-like front teeth, which each measured about 5 inches (12.5 cm) long. It also possessed feathers, which it used for display, much like a peacock's tail, as well as insulation. Like modern songbirds, Incisivosaurus used their feathered, wing-like arms for mating displays, especially when competing with other Incisivosaurus for food and space.

Dinobirds
Nigel encountered a male Incisivosaurus around the beginning of the episode and then again around the end when two males destroy the Microraptor trap (probably because they seemed to be territorial or competitive during the mating season).

Errors

 * Incisivosaurus should not have pronated hands, which dinosaurs are often portrayed with in media. Their wrist bones were physically incapable of pronating.
 * Their wings should be larger and probably covered their third fingers.
 * Their tail fans could have been larger in real life, though this is just a speculation.