Early Grey
- Group
- Butterflies and moths
- Peak month
- April
- Records since 2000
- 4,715
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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
Thrift
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 4,703
Round-leaved Sundew
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,644
Woodland Red Ant
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 4,639
Yellow Starry Feather-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 4,629
Six-spot Burnet
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,601
Common Limpet
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 4,578
Moss Carder Bee
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 4,573
Ruby Tiger Moth
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,565
Garden Grey
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,538
Pomarine Jaeger
- Group
- Birds
- Peak month
- September
- Records since 2000
- 4,520
Lungwort [lichen]
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 4,515
July Highflyer
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,513
Yellow Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 4,490
Lunar Underwing
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 4,465
Ladder Flapwort
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 4,463
Rosy Rustic
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 4,443
Sea Plantain
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 4,391
Nettle-tap
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 4,367
Tipula oleracea
- Group
- True flies
- Peak month
- May
- Records since 2000
- 4,355
Black Stone Flower
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 4,349
Knotted Wrack
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 4,248
Scarlet Waxcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 4,247
Golden-head Moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 4,224
Mougeot's Yoke-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 4,222
Reindeer Lichen
- Group
- Lichens
- Peak month
- August
- Records since 2000
- 4,213
Flagellate Feather-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 4,162
Lousewort
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,131
Small Fan-footed Wave
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,131
Brown Silver-line
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 4,097
Variable Crisp-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 4,091
Knot Grass [moth]
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,052
Marsh Pennywort
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 4,010
Lapland Longspur
- Group
- Birds
- Peak month
- October
- Records since 2000
- 4,008
Inlaid Grass-veneer
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 3,963
Common Pollen Beetle
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 3,918
Heath Bumble Bee
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 3,910
Ingrailed Clay
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 3,879
Mountain hare
- Group
- Mammals
- Peak month
- April
- Records since 2000
- 3,875
Rustic
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 3,742
White-shouldered House Moth
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 3,707
Strawberry Harp Ground Beetle
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 3,630
Black-eye Lichen
- Group
- Lichens
- Peak month
- July
- Records since 2000
- 3,474
Common White Wave
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 3,443
Soft Bog-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 3,426
Pebble Prominent
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 3,401
Magpie [moth]
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 3,398
Middle-barred Minor
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 3,395