
| APR | MAY | JUN | JUL | AUG | SEP | ||||||||||||||||||||||
| Week no. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | |
| Site | Ind | ||||||||||||||||||||||||||
| Small Skipper | 48 | . | . | . | . | . | . | . | . | . | . | . | 3 | 3 | 12 | 14 | 8 | . | . | . | . | . | |||||
| Essex Skipper | 8 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 6 | 1 | . | . | . | . | . | |||||
| Large Skipper | 30 | . | . | . | . | . | . | . | . | . | 3 | 4 | 7 | 3 | 6 | . | . | 1 | . | . | . | . | |||||
| Dingy Skipper | 12 | . | . | . | . | . | 2 | 8 | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 10 | . | . | . | . | . | 2 | . | . | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Brimstone | 140 | 20 | . | 11 | 11 | 12 | 6 | 3 | 5 | 4 | 1 | 2 | . | 2 | 1 | 2 | 15 | 11 | 2 | 7 | . | 1 | |||||
| Large White | 31 | . | . | . | 2 | . | . | . | 1 | 3 | . | 2 | . | . | 4 | 7 | 4 | . | 2 | . | . | . | |||||
| Small White | 79 | . | . | . | . | . | 1 | . | . | 5 | 1 | 1 | 1 | 1 | 9 | 6 | 15 | 10 | 8 | 5 | . | . | |||||
| Green-veined White | 73 | . | . | 2 | 2 | 10 | 1 | 5 | 3 | 4 | . | . | 1 | . | 1 | 9 | 7 | 1 | 2 | 8 | . | . | |||||
| Orange Tip | 48 | . | . | 6 | 9 | 10 | 3 | 3 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 2 | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 4 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | 1 | |||||
| Brown Argus | 5 | . | . | . | . | . | . | 2 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Common Blue | 17 | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | 2 | . | . | 1 | . | 1 | 1 | 4 | . | . | |||||
| Holly Blue | 4 | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||
| White Admiral | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 47 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | 4 | 2 | 23 | 6 | 2 | . | 1 | |||||
| Painted Lady | 5 | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | 1 | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 89 | 2 | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | 28 | 38 | . | . | . | |||||
| Peacock | 256 | 16 | 6 | 14 | 14 | 11 | 13 | 4 | 1 | 2 | . | . | . | . | 3 | 14 | 26 | 87 | 14 | 4 | . | 1 | |||||
| Comma | 17 | . | 1 | . | . | . | . | . | 1 | . | . | . | . | 1 | 5 | 1 | . | 3 | . | . | . | 2 | |||||
| Dark Green Fritillary | 16 | . | . | . | . | . | . | . | . | . | . | . | . | 5 | . | . | 9 | . | . | . | . | . | |||||
| Silver-washed Fritillary | 184 | . | . | . | . | . | . | . | . | . | . | . | 2 | 5 | 25 | 27 | 27 | 31 | 32 | 2 | . | . | |||||
| Speckled Wood | 196 | . | 1 | 2 | 3 | . | 1 | 5 | 6 | 16 | 10 | 9 | 2 | 2 | . | 1 | 3 | 7 | 29 | 29 | 6 | 1 | |||||
| Marbled White | 65 | . | . | . | . | . | . | . | . | . | . | . | 20 | 13 | 16 | 1 | 1 | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 60 | . | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 19 | 23 | 2 | 1 | . | . | . | |||||
| Meadow Brown | 194 | . | . | . | . | . | . | . | . | . | . | 4 | 5 | 4 | 20 | 12 | 12 | 38 | 47 | 8 | . | . | |||||
| Ringlet | 262 | . | . | . | . | . | . | . | . | . | 2 | . | 28 | 89 | 36 | 26 | 18 | . | . | . | . | . | |||||