Glu´tæus, n. A muscle of the side of the rump.

Gnathid´ium, n.; pl. gnathidia. Branch of the lower jaw as far as it is naked. (Oftener used in the plural.) (24.)

Gnathothe´ca, n. Covering of the lower mandible. (14.)

Gonyde´al, a. Pertaining to the mandibular symphysis.

Go´nys, n. Keel or lower outline of the bill as far as the mandibular rami are united. (The word is commonly but erroneously so written, as if from the Greek gonu, knee, or protuberance of the bill; it is rather from the Greek genus (genys), signifying chin.—Sundevall.)

Gor´get, n. Throat-patch, distinguished by color or texture of the feathers.

Gra´dient, a. Walking or running by steps. Opposed to saltatory, or leaping.

Grad´uated, a. Changing length at regular intervals, in regular succession; said chiefly of the tail when its feathers regularly shorten successively by more and more from the middle to the outer.

Graminiv´orous, a. Grass-eating.

Graniv´orous, a. Seed-eating.