Photo: Jürgen Reich
Two different evaluations were made in the assessment of threatened Baltic Sea birds: bird populations dependent on the HELCOM marine area during their breeding or wintering times were assessed separately.
In the assessment of breeding populations, a total of 58 species or subspecies of birds have been analysed. Out of those, 23 were red-listed.
One species, the gull-billed tern (Gelochelidon nilotica), has been a regular breeding bird in the past but is considered Regionally Extinct (RE) today. The category Critically Endangered (CR) also comprises one species, the Kentish plover (Charadrius alexandrinus), which has formerly been a regular breeder in Denmark, Sweden and Germany, but after 2000 has only bred with single pairs in Sweden and Germany (Mecklenburg-Western Pomerania).
The category Endangered (EN) comprises four species (the southern dunlin Calidris alpina schinzii, the Terek sandpiper Xenus cinereus, the Mediterranean gull Larus melanocephalus and the black-legged kittiwake Rissa tridactyla). Eight species or subspecies were classified as Vulnerable (VU) and nine as Near Threatened (NT).
For the wintering populations of the Baltic Sea birds, a total of 47 species, subspecies, or populations were included in the assessment. Out of those, 16 were red-listed.
Two species, the red-throated diver (Gavia stellata) and the black-throated diver (Gavia arctica), have dramatically decreased as wintering birds in the Baltic Sea and were classified as Critically Endangered (CR). The category Endangered (EN) comprises seven species, including five sea duck species. Three taxa classify for the category Vulnerable (VU) and four for the category Near Threatened (NT).
In all 47 wintering species were evaluated, 12
were regarded Not Applicable due to their insignificant proportion of the
overall wintering population, and four were left unevaluated due to the lack of
Assessment information on breeding birds
Assessment information on wintering birds