Sandpiper (Sharp-tailed) Calidris acuminata

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Charadriiformes
Family: Scolopacidae
Genus: Calidris
Species: C. acuminata
Binomial name: Calidris acuminata
Common name: Sharp-tailed sandpiper

Calidris acuminata (Sharp-tailed sandpiper) is a small, long-distance migrant that breeds in the boggy tundra of northeast Asia and is strongly migratory, wintering in south-east Asia and Australasia. It is a rare migrant to New Zealand. 
It is a portly sandpiper with a flat back, pot belly and somewhat drawn-out rear end. It has a small flat head on a short neck with a short and slightly decurved bill. Their body length is 22 cm (bill tip to tail), a wingspan of 36–43 cm and a weight of 65 g.
These birds forage on grasslands and mudflats, picking up food by sight, sometimes by probing. They mainly eat insects and other invertebrates.

Calidris acuminata JJ Harrison.jpg  

Thanks to Wikipedia for text and information