The black tern is a small tern generally found in or near inland water in Europe and North America. As its name suggests, it has predominantly dark plumage. In some lights it can appear blue in the breeding season, hence the old English name "blue darr".
Similar species: Shorebirds And Allies
Uploaded May 8, 2021. Captured May 5, 2021 09:12 in ul. "Vasil Levski" 24, 1261 Mramor, Bulgaria.
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