Watercock (Gà đồng, Gallicrex cinerea)

The watercock (Gallicrex cinerea) is a waterbird in the rail and crake family, Rallidae that is widely distributed across Southeast Asia.

Gruiformes is a scientific bird order named from New Latin, combining the Latin word Grus (meaning "crane") with the Greek-derived suffix -iformes (meaning "having the form of"), essentially meaning "crane-like" or "crane-formed" birds, encompassing cranes, rails, and coots. 

"Rail" is the anglicized respelling of the French râle, from Old French rasle. It is named from its harsh cry, in Vulgar Latin *rascula, from Latin rādere ("to scrape").

The family name Rallidae comes from the Latinized form of the word for "rail" derived from Latin rallus for aquatic birds.

The genus name combines the genus Gallus (From Latin gallus: “rooster, cock, male chicken") with the genus Crex (From Ancient Greek kréx, “corn crake”).

cinerea is borrowed from Latin cinereus (“ashy”).