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Roost rings: Massive flocks of birds visible on Metro Detroit radar Saturday morning
Read full article: Roost rings: Massive flocks of birds visible on Metro Detroit radar Saturday morningRoost rings: Massive flocks of birds visible on Metro Detroit radar Saturday morningPublished: August 8, 2020, 7:23 amLocal 4's Paul Gross explains the large rings visible on Storm Tracker 4 Saturday morning -- and, believe it or not, they're made of birds.