This group and at least 1,00 of their buddies were "wheeeeping" it up.
Approximately 45 foraging in grassland
Fairly large birds, downcurved fairly long bill, wading bird body plan. I guess Whimbrel most likely, but Curlew?
The Long-billed Curlew (Numenius americanus) is a large North American shorebird of the family Scolopacidae. This species was also called "sicklebird" and the "candlestick bird". The species is native to central and western North America. In the winter, the species migrates southwards, as well as towards the coastline.