There are two possible whimbrels, that might be seen in North America. The Hudsonian Whimbrel is a native shorebird seen throughout the North American continent at some point during the calendar year. This large shorebird is a member of the curlew family. It has faired better, than most other curlew species in the world, because curlews in general, have suffered from extinction. These birds were hunted for sport and food.
The Eurasian Whimbrel is a very rare visitor, it is found throughout Eurasia. These shorebirds are very uncommon as the Hudsonian Whimbrel, when seen in North America. The Eurasian whimbrel can be separated from the Hudsonian Whimbrel seen in North American by a very noticeable white rump, which can be observed when the bird is in flight.
The Whimbrel breeds on the tundras on both continents. These birds may be found on the top of treeless hills, where they nest in flocks. The tundra is ideal for these shorebirds, where they are able to locate their food in the wet and soggy soils during the spring and summer months.
ABA - American Birding Association This site represents an organization that maintains official records of all birds species that have been proven to have been seen inside the perimeters of the North American Continent and the surrounding bodies of water. Regular revised versions are posted to keep the bird list current at all times. This is the list used by all serious birders over their lifetime. You may be aware of the movie called the "Big Year". It was with this list that all the competing birders used in an attempt to set a new record as to how many bird species that could be seen by an individual birder in one calendar year.