The common guillemot.

Having a breast like a pigeon's, the sternum being so prominent as to constitute a deformity.

cowardly

timid; easily frightened; chicken-hearted

A female pigeon.

A male pigeon.

The breeding, competitive showing and racing of domestic pigeons

The sport of releasing specially trained homing pigeons (racing pigeons), which then return to their homes over a carefully measured distance.

Any member of the genus Treron of the pigeon family.

Any member of the genus Alectroenas of the pigeon family.