Soprano Pipistrelle
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 266,742
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- Designations
- Habitats Regulations (NI) 1995
Habitats Regulations (NI) 1995
42 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
European otter
- Group
- Mammals
- Peak month
- May
- Records since 2000
- 28,426
Atlantic Salmon
- Group
- Fish
- Peak month
- August
- Records since 2000
- 16,731
Grey seal
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 15,095
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
Harbor porpoise
- Group
- Mammals
- Peak month
- July
- Records since 2000
- 6,518
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
Mountain hare
- Group
- Mammals
- Peak month
- April
- Records since 2000
- 3,875
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
Western Barbastelle
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 1,201
Common Whiskered Bat
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 798
White-beaked dolphin
- Group
- Mammals
- Peak month
- July
- Records since 2000
- 769
Nathusius's Bat
- Group
- Mammals
- Peak month
- September
- Records since 2000
- 662
Orca
- Group
- Mammals
- Peak month
- May
- Records since 2000
- 647
Twaite Shad
- Group
- Fish
- Peak month
- February
- Records since 2000
- 599
Risso's dolphin
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 581
European river lamprey, River Lamprey
- Group
- Fish
- Peak month
- September
- Records since 2000
- 493
Brandt's Bat
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 381
Humpback Whale
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 282
Bechstein's Bat
- Group
- Mammals
- Peak month
- January
- Records since 2000
- 257
Long-finned pilot whale
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 234
White-Sided Dolphin
- Group
- Mammals
- Peak month
- July
- Records since 2000
- 208
Sperm Whale
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 180
Striped Dolphin
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 162
Fin Whale
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 142
Leatherback Turtle
- Group
- Reptiles
- Peak month
- October
- Records since 2000
- 121
Cuvier's beaked whale
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 98
Sei Whale
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 90
Allis Shad
- Group
- Fish
- Peak month
- June
- Records since 2000
- 89
Loggerhead turtle
- Group
- Reptiles
- Peak month
- October
- Records since 2000
- 83
Green Turtle
- Group
- Reptiles
- Peak month
- October
- Records since 2000
- 76
Killer Whale
- Group
- Mammals
- Peak month
- November
- Records since 2000
- 75
Greater Mouse-Eared Bat
- Group
- Mammals
- Peak month
- January
- Records since 2000
- 58
Grey Long-Eared Bat
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 53