The Area of the Wigry National Park doesn’t fulfil the BirdLife International criteria.
Criterion 3. Wigry National Park provides a variety of habitats to species important for maintaining biological diversity of sub-boreal biogeographical region (region of East-European mixed forests). Of special value are peculiarities of rich local flora that includes almost 1000 vascular species, about 300 bryophytes, numerous fungi, myxomycetes and algae. Local fauna embraces 48 species of mammals, 205 birds including 150 species of breeding birds, 12 amphibian species, 55 molluscs and 32 fish species.