Bar-tailed Godwit

It makes the longest known non-stop flight of any bird and also the longest journey without pausing to feed by any animal, 11,680 kilometres (7,258 mi) along a route from Alaska to New Zealand. The adult has blue-grey legs and a very long dark bill with a slight upward curve and pink at the tip. The neck, breast and belly are unbroken brick red in breeding plumage, off white in winter. The back is mottled grey. From Wiki.