Black Tern populations declined by almost 2% per year between 1966 and 2014, resulting in a cumulative decline of 57%, according to the North American Breeding Bird Survey. The North American Waterbird Conservation Plan estimates a population of 100,000-500,000 breeding birds in North America, rates them an 11 out of 20 on the Continental Concern Score, and lists them as a Species of Moderate Concern. The 2014 State of the Birds Report lists them as a Common Bird in Steep Decline.Back to top
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