Black-tailed godwit (Choắt mỏ thẳng đuôi đen, Limosa limosa) 

The black-tailed godwit (Limosa limosa) is a large, long-legged, long-billed shorebird of the family Scolopacidae.

The bir's breeding range stretches from Iceland through Europe and areas of central Asia. 
This bird species winters in the Indian subcontinent, Australia, New Zealand, western Europe and west Africa. 
The bird is migrant and commonly found at the Giao Thuy National Park during the winter time.

The godwits can be distinguished from the curlews by their straight or slightly upturned bills, and from the dowitchers by their longer legs. 
The genus name Limosa is from Latin and means "muddy", from limus, "mud". The English name "godwit" is believed to imitate the bird's call.
The genus is commonly known as the gotwit comprising large, long-billed, long-legged and strongly migratory waders of the bird.