Brown noddy or common noddy (Nhàn đầu xám, Anous stolidus)

The brown noddy, common noddy or noddy tern (Anous stolidus) is a seabird in the family Laridae.

Charadriiformes, Charadriidae, Charadrius: Late Latin word for a yellowish bird mentioned in the fourth-century Vulgate; from Ancient Greek kharadrios a bird found in ravines and river valleys (kharadra, "ravine").

Laridae:from Ancient Greek laros or Latin larus, which appears to have referred to a gull or other large seabird.

Anous is Ancient Greek for "stupid" or "foolish", referring to the birds' unwariness or indifference to hunters, predators.

Stolidus is a Latin adjective meaning "dull," "stupid," "insensitive," or "solid/unmovable". Derived from the PIE root *stel- ("to set, stand"), it is related to stultus (foolish) and shares a cognate in the Ancient Greek steleós (meaning handle or block). It describes a heavy, slow, or brutish lack of understanding.