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Bobolinks are the only birds with light feathers above and dark feathers below. They’re easy to see in open grasslands during spring migration, especially if you’re looking for them in fields with a lot of tall grasses and very few trees or shrubs. Watch for them displaying, soaring and giving off their bubbly series of musical gurgles. They’re also well known for their stiff-winged courtship flights, in which they sing while moving in a “helicopter” pattern. Once a common sight in our region, the bobolink’s breeding habitat has been in decline in r