psilopaedes

Century Dictionary and Cyclopedia

1. In ornithology, in Sundevall's system (1872), a primary group of birds, embracing those which are hatched naked and require to be fed in the nest by the parent The term is nearly conterminous with Altrices, but of more exact signification. The antithesis is Ptilopædes or Dasypædes. Also called Gymnopædes.

GNU Webster's 1913

1. n. (Zoöl.) birds whose young at first have down on the pterylæ only; -- called also Gymnopædes.