Common moorhen
also known as the waterhen or swamp chicken, Eurasian Moorhen
(Gallinula chloropus)

The common moorhen (Gallinula chloropus), also known as the eurasian moorhen, waterhen or swamp chicken, is a bird species in the rail family (Rallidae).

Rallidae: from rallus new Latin for rail, an aquatic bird.
Gallinula: Latin for "little hen or chicken".
The Greek chloropus: Chloris ("Khloris" or from "Khloros"), meaning "greenish-yellow," "pale green," "pale," or "fresh";
pous foot.