The fauna of mammals within the sit

The fauna of mammals within the site is well represented with 48 mammals including protected beaver (Castor fiber) – at least 60 stands, otter (Lutra lutra), muskrat (Ondatra zibetica), wolf (Canis lupus), lynx (Felis lynx), stoat (Mustela erminea) and European elk (Alces alces). Protected bat species include Vespertilio murinus, Eptesicus serotinus and Plecotus auritus.
The site supports 150 bird breeding species and the total number of birds observed is 205. The local waterfowl embraces 40 breeding and 33 species occurring seasonally. They include black stork (Ciconia nigra) 1 pair, white stork (Ciconia ciconia) 20-30 pairs, great crested grebe (Podiceps cristatus) ca 300 individuals, red-necked grebe (Podiceps grisegena), little grebe (Podiceps ruficollis), rare red-brested merganser (Mergus serrator), mute and whooper swans (Cygnus olor and C. cygnus) ca 400 individuals and bittern (Botaurus stellaris) 7-8 individuals.
Rare predatory birds include white-tailed eagle (Haliaeetus albicilla), osprey (Pandion haliaetus), red kite (Milvus milvus), lesser spotted eagle (Aquila pomarina).
To other rare and threatened species observed within the Park belong: kingfisher (Alcedo atthis), goldeneye (Bucephala clangula), common rose finch (Carpodacus erythrinus), great white egret (Egretta alba), goosander (Mergus merganser), bluethroat (Luscinia svecica) and river warbler (Locustella locustella).
Rare and protected species of other taxonomic groups: - molluscs – Anodonta cygnea; insects – Anthophora plumipes and bumblebees: Bombus jonellus, Bombus schrencki, Bombus semenoviellus.