insessores Meaning, Definition & Usage

  1. noun a bird with feet adapted for perching (as on tree branches); this order is now generally abandoned by taxonomists
    perching bird; percher; order Insessores.

WordNet

In`ses*so"res noun plural
Etymology
NL., fr. L. insessor, lit., one who sits down, fr. incidere. See Insession.
Definitions
  1. (Zoöl.) An order of birds, formerly established to include the perching birds, but now generally regarded as an artificial group.

Webster 1913