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Scientific name
Chlidonias niger (Linnaeus, 1758)
German name
Trauerseeschwalbe
Group of organisms
Aves
Red List Category
Threatened with Extinction
Current population status
very rare
Long-term population trend
strong decline
Short-term population trend
constant
Special cases
Negative risk factor(s) is/are known
Risk factors
Dependent on unstable conservation measures
Previous Red List Category
Threatened with Extinction
Change of category compared to previous Red List
Red List Category unchanged
Source

Grüneberg, C.; Bauer, H.-G.; Haupt, H.; Hüppop, O.; Ryslavy, T. & Südbeck, P. (2016): Rote Liste der Brutvögel Deutschlands. 5. Fassung, 30. November 2015. – Berichte zum Vogelschutz 52: 19–67.