Eurasian or common whimbrel 
(Choắt mỏ cong bé, Numenius phaeopus), also known as the white-rumped whimbrel 
formerly Scolopax phaeopus.

The Eurasian whimbrel (Numenius phaeopus), also known as the white-rumped whimbrel in North America, is a wader in the large family Scolopacidae.

The term Charadriiformes comes from New Latin, combining the Greek word kharadrios ("a bird of river valleys" or "a bird of ravines") and the Latin suffix -formes meaning "forms" or "shaped like". Therefore, Charadriiformes translates to "birds shaped like or resembling the charadrius," which is a type of plover or stone curlew historically found in dry river beds or ravines. 

The bird breeds across much of subarctic Palearctic region and Europe; and winters in  Africa, South Asia and Australasia.

The whimbrel is a passthrough, winter bird commonly sighted at the Xuan Thuy National Park, northern Vietnam.

The word Scolopacidae is New Latin, derived from the genus name Scolopax (Latin for "snipe" or "woodcock") and the common zoological suffix for family names, -idae.

The English name may have been influenced by the Old French corliu, "messenger", from courir , "to run".

Numenius (Νουμήνιος, noumēnios) comes from Greek, meaning "of the new moon" or related to the moon's first phase, derived from neos (new) + mene (moon), referencing the curlew's crescent-shaped bill, though it's also linked to "bird" or used by philosophers like Numenius of Apamea, making it a term with both biological and philosophical roots from Greek to Latin. 

Phaeopus comes from Ancient Greek, combining phaios (φaiós) meaning "dusky, gray, brown" and pous (ποῦς) meaning "foot" meaning "dusky-foot" or "gray-foot," used for the Whimbrel bird (Numenius phaeopus) due to its dull, brownish-gray legs and feet, contrasting its speckled brown body, and it's a Medieval Latin name.