What is "eskimo curlew"

The Eskimo curlew or the northern curlew is one of eight species of curlew, and is classed in the genus Numenius. It was one of the most numerous shorebirds in the tundra of western Arctic Canada and Alaska, with approximately two million birds killed per year in the late 1800s. Having not been seen in over 30 years, the Eskimo curlew is now considered possibly extinct. The bird was about long and fed mostly on berries.