Topic summary
Superprecocial
Extracted from the Wikipedia article Precociality and altriciality.
Superprecociality
Extremely precocial species are called "superprecocial". Examples are the megapode birds, which have full-flight feathers at hatching and which, in some species, can fly on the same day. Enantiornithes and pterosaurs were also capable of flight soon after hatching.