One special shorebird that breeds in North Dakota is the marbled godwit. I'm always pleased to encounter this large, chunky-yet-graceful bird with the two-toned, upcurved bill on my annual NoDak trip. Last week at the Potholes and Prairie Birding Festival I had two close encounters of the godwit kind: one near Pingree and one farther to the west, in Kidder County. Here are some images from both.
During winter they probe mudflats and sandbars for mollusks and crustaceans.