animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium

pertaining to or characteristic of birds

(ornithology) the class of birds

a group of birds

horny projecting mouth of a bird

a forked bone formed by the fusion of the clavicles of most birds

the light horny waterproof structure forming the external covering of birds

a movable organ for flying (one of a pair)

wing of a bird

(birds or insects) characterized by or tending to chirp

watch and study birds in their natural habitat

small bird; adults talking to children sometimes use these words to refer to small birds

adult male bird

adult female bird

a bird that has built (or is building) a nest

any bird associated with night: owl; nightingale; nighthawk; etc

(ornithology) the class of birds

a group of birds

horny projecting mouth of a bird

a forked bone formed by the fusion of the clavicles of most birds

the light horny waterproof structure forming the external covering of birds

a movable organ for flying (one of a pair)

wing of a bird

(birds or insects) characterized by or tending to chirp