Swan's-neck Thyme-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 25,888
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- Species by county
- Isle of Anglesey
Species recorded in Isle of Anglesey
778 species
Isle of Anglesey — county
Cuckooflower
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 25,770
Cuckoo-spit Insect
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 25,331
Forked Veilwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 24,734
Neat Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 24,718
Wall Screw-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 24,717
Spear Thistle
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 24,682
Small Garden Bumble Bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 24,422
Ground-ivy
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 24,139
Common Bird's-foot-trefoil
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 24,100
Great Willowherb
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 24,020
Garden Snail
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 23,914
Bifid Crestwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 23,907
Common Toad
- Group
- Amphibians
- Peak month
- March
- Records since 2000
- 23,841
Dilated Scalewort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 23,654
Red Clover
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 23,504
Greater Plantain
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 23,502
Stock bug
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 23,298
Common Red Soldier Beetle
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 23,196
Broom Fork-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 23,139
Common Grasshopper-Warbler
- Group
- Birds
- Peak month
- April
- Records since 2000
- 23,015
Small Pearl-bordered Fritillary
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 22,974
Broad-leaved Dock
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 22,935
Welshman's Button Caddisfly
- Group
- Caddisflies
- Peak month
- April
- Records since 2000
- 22,673
Velvet Swimming Crab
- Group
- Crustaceans
- Peak month
- July
- Records since 2000
- 22,671
Creeping Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 22,321
Redshank [moss]
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 21,994
Hairy Shieldbug
- Group
- True bugs
- Peak month
- May
- Records since 2000
- 21,763
Grey-cushioned Grimmia
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 21,756
Heath Plait-moss
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 21,593
False Oil Beetle
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 21,524
Sandfly
- Group
- Caddisflies
- Peak month
- April
- Records since 2000
- 21,424
Germander Speedwell
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 21,208
Forest Bug
- Group
- True bugs
- Peak month
- August
- Records since 2000
- 21,188
European water vole
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 21,169
Meadow Buttercup
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 20,980
Tormentil
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 20,922
Hairy Dragonfly
- Group
- Dragonflies and damselflies
- Peak month
- May
- Records since 2000
- 20,883
Garden Sorrel
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 20,829
Bracken
- Group
- Ferns and horsetails
- Peak month
- June
- Records since 2000
- 20,814
Hydropsyche siltalai
- Group
- Caddisflies
- Peak month
- April
- Records since 2000
- 20,749
Lesser Knapweed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 20,597
Common Field Grasshopper
- Group
- Grasshoppers and crickets
- Peak month
- August
- Records since 2000
- 20,577
Sweet Vernal Grass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 20,537
European Common Lizard
- Group
- Reptiles
- Peak month
- August
- Records since 2000
- 20,492
Common Tamarisk-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 20,226
Long-tailed Duck
- Group
- Birds
- Peak month
- January
- Records since 2000
- 20,221
Lesser Horseshoe Bat
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 19,920