The following plot shows the number of migrant bird species versus time of year. The following family groups are plotted separately:- Waterfowl: Greater White-fronted Goose .. Ruddy Duck - 25 migrants. Shorebirds: Black-bellied Plover .. Red Phalarope - 27 migrants. Warblers: Blue-winged Warbler .. Yellow-breasted Chat - 32 migrants. Sparrows: Eastern Towhee .. Snow Bunting - 11 migrants.