Soprano Pipistrelle
- Peak month
- August
- Records since 2000
- 266,742
- Scientific name
- Pipistrellus pygmaeus
Eastern gray squirrel
- Peak month
- October
- Records since 2000
- 216,854
- Scientific name
- Sciurus carolinensis
Eurasian red squirrel
- Peak month
- September
- Records since 2000
- 158,364
- Scientific name
- Sciurus vulgaris
Common Pipistrelle
- Peak month
- July
- Records since 2000
- 155,421
- Scientific name
- Pipistrellus pipistrellus
Daubenton's Bat
- Peak month
- August
- Records since 2000
- 65,340
- Scientific name
- Myotis daubentonii
European rabbit
- Peak month
- May
- Records since 2000
- 61,227
- Scientific name
- Oryctolagus cuniculus
Red fox
- Peak month
- August
- Records since 2000
- 56,196
- Scientific name
- Vulpes vulpes
European roe deer
- Peak month
- May
- Records since 2000
- 53,679
- Scientific name
- Capreolus capreolus
Eurasian beaver
- Peak month
- November
- Records since 2000
- 39,593
- Scientific name
- Castor fiber
European hare
- Peak month
- April
- Records since 2000
- 29,750
- Scientific name
- Lepus europaeus
European otter
- Peak month
- May
- Records since 2000
- 28,426
- Scientific name
- Lutra lutra
European mole
- Peak month
- March
- Records since 2000
- 25,264
- Scientific name
- Talpa europaea
European badger
- Peak month
- October
- Records since 2000
- 24,256
- Scientific name
- Meles meles
Hedgehog
- Peak month
- August
- Records since 2000
- 23,362
- Scientific name
- Erinaceus europaeus
European water vole
- Peak month
- August
- Records since 2000
- 21,169
- Scientific name
- Arvicola amphibius
Chinese Muntjac
- Peak month
- April
- Records since 2000
- 20,457
- Scientific name
- Muntiacus reevesi
Lesser Horseshoe Bat
- Peak month
- June
- Records since 2000
- 19,920
- Scientific name
- Rhinolophus hipposideros
Fallow deer
- Peak month
- October
- Records since 2000
- 15,521
- Scientific name
- Dama dama
Grey seal
- Peak month
- August
- Records since 2000
- 15,095
- Scientific name
- Halichoerus grypus
Natterer's Bat
- Peak month
- February
- Records since 2000
- 13,257
- Scientific name
- Myotis nattereri
Harbor seal
- Peak month
- July
- Records since 2000
- 12,641
- Scientific name
- Phoca vitulina
Common long-eared bat
- Peak month
- June
- Records since 2000
- 12,493
- Scientific name
- Plecotus auritus
Noctule Bat
- Peak month
- July
- Records since 2000
- 12,276
- Scientific name
- Nyctalus noctula
Brown rat
- Peak month
- October
- Records since 2000
- 11,756
- Scientific name
- Rattus norvegicus
Wood mouse
- Peak month
- September
- Records since 2000
- 10,137
- Scientific name
- Apodemus sylvaticus
Red deer
- Peak month
- October
- Records since 2000
- 8,537
- Scientific name
- Cervus elaphus
Harbor porpoise
- Peak month
- July
- Records since 2000
- 6,518
- Scientific name
- Phocoena phocoena
Greater horseshoe bat
- Peak month
- February
- Records since 2000
- 6,208
- Scientific name
- Rhinolophus ferrumequinum
Lesser noctule
- Peak month
- June
- Records since 2000
- 4,848
- Scientific name
- Nyctalus leisleri
European pine marten
- Peak month
- June
- Records since 2000
- 4,684
- Scientific name
- Martes martes
Mink
- Peak month
- September
- Records since 2000
- 4,610
- Scientific name
- Mustela vison
Stoat
- Peak month
- July
- Records since 2000
- 4,363
- Scientific name
- Mustela erminea
Mountain hare
- Peak month
- April
- Records since 2000
- 3,875
- Scientific name
- Lepus timidus
Bank Vole
- Peak month
- September
- Records since 2000
- 3,619
- Scientific name
- Myodes glareolus
Field vole
- Peak month
- August
- Records since 2000
- 3,284
- Scientific name
- Microtus agrestis
Common shrew
- Peak month
- July
- Records since 2000
- 2,577
- Scientific name
- Sorex araneus
Cat
- Peak month
- January
- Records since 2000
- 2,121
- Scientific name
- Felis catus
Sika Deer
- Peak month
- September
- Records since 2000
- 2,042
- Scientific name
- Cervus nippon
Harvest Mouse
- Peak month
- November
- Records since 2000
- 1,917
- Scientific name
- Micromys minutus
Hazel dormouse
- Peak month
- October
- Records since 2000
- 1,733
- Scientific name
- Muscardinus avellanarius
Least weasel
- Peak month
- August
- Records since 2000
- 1,725
- Scientific name
- Mustela nivalis
Russian Wild Horse
- Peak month
- June
- Records since 2000
- 1,701
- Scientific name
- Equus ferus
Short-beaked common dolphin
- Peak month
- August
- Records since 2000
- 1,652
- Scientific name
- Delphinus delphis
Common bottlenose dolphin
- Peak month
- August
- Records since 2000
- 1,558
- Scientific name
- Tursiops truncatus
Minke whale
- Peak month
- June
- Records since 2000
- 1,556
- Scientific name
- Balaenoptera acutorostrata
Gray wolf
- Peak month
- November
- Records since 2000
- 1,522
- Scientific name
- Canis lupus
Eurasian pygmy shrew
- Peak month
- July
- Records since 2000
- 1,240
- Scientific name
- Sorex minutus
Western Barbastelle
- Peak month
- August
- Records since 2000
- 1,201
- Scientific name
- Barbastella barbastellus