Soprano Pipistrelle
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 266,742
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- Habitats Directive
Habitats Directive
81 species
Common Pipistrelle
- Group
- Mammals
- Peak month
- July
- Records since 2000
- 155,421
Daubenton's Bat
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 65,340
(Great or Northern) Crested Newt
- Group
- Amphibians
- Peak month
- May
- Records since 2000
- 39,193
Common frog
- Group
- Amphibians
- Peak month
- March
- Records since 2000
- 33,381
European otter
- Group
- Mammals
- Peak month
- May
- Records since 2000
- 28,426
Lesser Horseshoe Bat
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 19,920
Atlantic Salmon
- Group
- Fish
- Peak month
- August
- Records since 2000
- 16,731
Grey seal
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 15,095
Marsh Fritillary
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 14,938
Natterer's Bat
- Group
- Mammals
- Peak month
- February
- Records since 2000
- 13,257
Harbor seal
- Group
- Mammals
- Peak month
- July
- Records since 2000
- 12,641
Common long-eared bat
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 12,493
Noctule Bat
- Group
- Mammals
- Peak month
- July
- Records since 2000
- 12,276
Southern Damselfly
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 9,257
Harbor porpoise
- Group
- Mammals
- Peak month
- July
- Records since 2000
- 6,518
Greater horseshoe bat
- Group
- Mammals
- Peak month
- February
- Records since 2000
- 6,208
Lesser noctule
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 4,848
European pine marten
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 4,684
Freshwater White-clawed Crayfish
- Group
- Crustaceans
- Peak month
- September
- Records since 2000
- 4,536
Reindeer Lichen
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 4,213
Mountain hare
- Group
- Mammals
- Peak month
- April
- Records since 2000
- 3,875
Jersey Tiger
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 3,666
Stag Beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 3,561
Large White-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 3,142
Common Maërl
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,671
Western Rustwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 2,470
Brook Lamprey
- Group
- Fish
- Peak month
- September
- Records since 2000
- 2,399
Butcher's-broom
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 2,140
Grayling [fish]
- Group
- Fish
- Peak month
- September
- Records since 2000
- 2,023
Hazel dormouse
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 1,733
Petalwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 1,727
Short-beaked common dolphin
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 1,652
Common bottlenose dolphin
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 1,558
Minke whale
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 1,556
Sea Lamprey
- Group
- Fish
- Peak month
- October
- Records since 2000
- 1,394
Barbel
- Group
- Fish
- Peak month
- September
- Records since 2000
- 1,326
Western Barbastelle
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 1,201
European polecat
- Group
- Mammals
- Peak month
- September
- Records since 2000
- 1,183
Coral Maërl
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 1,143
Green Shield-moss
- Group
- Mosses
- Peak month
- February
- Records since 2000
- 897
Varnished Hook-moss
- Group
- Mosses
- Peak month
- September
- Records since 2000
- 873
Common Whiskered Bat
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 798
Spined Loach
- Group
- Fish
- Peak month
- April
- Records since 2000
- 778
Chabot Bullhead
- Group
- Fish
- Peak month
- June
- Records since 2000
- 772
White-beaked dolphin
- Group
- Mammals
- Peak month
- July
- Records since 2000
- 769
Stag's-horn Clubmoss
- Group
- Clubmosses
- Peak month
- July
- Records since 2000
- 721
Nathusius's Bat
- Group
- Mammals
- Peak month
- September
- Records since 2000
- 662