Tangle
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 8,635
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- Species by county
- Na h-Eileanan Siar
Species recorded in Na h-Eileanan Siar
773 species
Na h-Eileanan Siar — county
Woolly Fringe-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 8,619
Snout
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 8,616
Red deer
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 8,537
Common Pouchwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 8,512
Common Cottongrass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 8,473
Sooty shearwater
- Group
- Birds
- Peak month
- September
- Records since 2000
- 8,460
Water Earwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 8,368
Straw Dot
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 8,320
Bog Hoverfly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 8,261
Codriophorus acicularis
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 8,188
Common Haircap
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 8,142
Common Marble
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 8,079
Cow-horn Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 7,999
Perthshire Beard-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 7,999
Buff ermine
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 7,977
Bright-line Brown-eye
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 7,916
Green Carpet
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 7,759
European Storm-Petrel
- Group
- Birds
- Peak month
- August
- Records since 2000
- 7,748
Poplar Hawk-moth
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 7,723
Hard-fern
- Group
- Ferns and horsetails
- Peak month
- June
- Records since 2000
- 7,697
Common Carpet
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 7,681
Pearl Veneer
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 7,658
Bell Heather
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 7,603
Lesser Featherwort
- Group
- Liverworts
- Peak month
- April
- Records since 2000
- 7,570
Light Emerald
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 7,541
Tamarisk Scalewort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 7,525
Beadlet Anemone
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 7,465
Glaucous Sedge
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,387
White Ermine
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 7,356
Acorn Barnacle
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 7,241
False Beard Moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 7,207
Papillose Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 7,168
Bumble Bee Hover Fly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 7,101
Elephant Hawk-moth
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 7,042
Bog Asphodel
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 7,024
Bristly Haircap
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 7,005
Dusky Slug
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 6,949
Small Red Sedge
- Group
- Caddisflies
- Peak month
- May
- Records since 2000
- 6,888
Common Grass Veneer
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 6,856
Notch-horned Cleg
- Group
- True flies
- Peak month
- July
- Records since 2000
- 6,849
Fountain Apple-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 6,751
Smoky Wainscot
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 6,750
Snowy Waxcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 6,720
Iceland Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 6,693
Greasewort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 6,627
Bumblebee Blacklet
- Group
- True flies
- Peak month
- July
- Records since 2000
- 6,599
Brown House Moth
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 6,590