Na h-Eileanan Siar — county
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 13,066
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 12,981
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 12,865
- Group
- Seaweeds and algae
- Peak month
- July
- Records since 2000
- 12,824
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 12,767
- Group
- Mammals
- Peak month
- July
- Records since 2000
- 12,641
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 12,557
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 12,214
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 12,111
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 12,032
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 11,898
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 11,818
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 11,789
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 11,756
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 11,742
- Group
- Birds
- Peak month
- August
- Records since 2000
- 11,717
- Group
- Butterflies and moths
- Peak month
- April
- Records since 2000
- 11,347
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 11,282
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 11,231
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 11,134
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 11,029
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 10,936
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 10,855
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 10,772
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 10,766
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 10,539
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 10,519
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 10,481
- Group
- Fish
- Peak month
- August
- Records since 2000
- 10,066
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 10,043
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 9,868
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 9,852
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 9,736
- Group
- Mosses
- Peak month
- January
- Records since 2000
- 9,711
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 9,683
- Group
- True flies
- Peak month
- May
- Records since 2000
- 9,678
- Group
- Birds
- Peak month
- January
- Records since 2000
- 9,660
- Group
- Birds
- Peak month
- January
- Records since 2000
- 9,541
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 9,453
- Group
- True flies
- Peak month
- June
- Records since 2000
- 9,218
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 9,024
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 8,933
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 8,898
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 8,781
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 8,765
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 8,764
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 8,719
- Group
- Mosses
- Peak month
- September
- Records since 2000
- 8,651