Bill short, robust; upper mandible with its dorsal outline decurved,
the ridge indistinct and rounded, the sides convex, the edges
overlapping, the tip declinate, thin-edged, rounded; lower mandible,
with the angle of moderate length and rounded, the dorsal line convex,
the sides rounded, the edges a little inclinate, the tip rounded;
nasal sinuses large and covered with feathers, leaving the ridge
narrow between them. Nostrils basal, roundish, concealed by the
feathers. Head small, ovate; neck rather long; body bulky. Feet rather
short, stout; tarsus feathered, as are the toes, which have two or
three terminal scutella; hind toe extremely short, lateral toes equal.
Claws slightly arched, depressed, thin-edged, rounded. Plumage full
and compact, the feathers rounded. Wings short, convex, the primaries
strong, narrow, tapering, the third longest, the fourth and second
little shorter. Tail short, nearly even, of more than twelve broad
feathers.