Allen's gallinule

Allen's gallinule (Porphyrio alleni), formerly known as the lesser gallinule, is a small waterbird of the family Rallidae.

They are similar in size to the only slightly larger water rail. The Allen's gallinule has a short red bill, greenish back and purple upperparts. They have red legs with long toes, and a short tail which is white with a dark central bar underneath. Breeding males have a blue frontal shield, which is green in the female. Immature Allen's gallinules are sandy brown with a buff undertail. The downy chicks are black, as with all rails. They nod their heads as they swim.