• Blue Jays are common, but their populations have declined by an estimated .6 percent per year for a cumulative decline of about 27 percent between 1966 and 2019 according to a North American Breeding Bird Survey. They have an estimated global breeding population of 17 million. Photo by Kari Kneip
    Blue Jays are common, but their populations have declined by an estimated .6 percent per year for a cumulative decline of about 27 percent between 1966 and 2019 according to a North American Breeding Bird Survey. They have an estimated global breeding population of 17 million. Photo by Kari Kneip

 

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