
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | . | . | 2 | 2 | 32 | 82 | 43 | 12 | 4 | . | . | . | . | ||||||
| Essex Skipper | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | . | ||||||
| Large White | . | . | . | . | . | 1 | . | . | . | . | . | . | 2 | 4 | . | . | . | 1 | . | 1 | ||||||
| Small White | . | . | . | . | . | 4 | . | 2 | . | . | . | . | 4 | 4 | 2 | 1 | . | 3 | . | . | ||||||
| Green-veined White | . | 3 | 7 | 16 | 7 | 13 | 2 | . | . | . | 1 | . | 9 | 18 | 4 | 4 | . | . | . | 1 | ||||||
| Orange Tip | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | . | 2 | 11 | 2 | 1 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | 1 | . | 2 | 2 | 3 | . | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Common Blue | . | . | . | . | . | 6 | 7 | 17 | 1 | . | . | . | 2 | 3 | 9 | 5 | 4 | . | . | . | ||||||
| Red Admiral | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | 1 | . | . | 2 | 2 | 2 | ||||||
| Small Tortoiseshell | . | 1 | 1 | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | 2 | ||||||
| Peacock | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | ||||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Wall Brown | . | . | . | . | 3 | 15 | . | . | . | . | . | . | . | . | . | 3 | 4 | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 2 | 7 | 98 | 166 | 76 | 41 | 13 | . | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | . | 6 | 159 | 247 | 357 | 382 | 282 | 130 | 60 | 6 | . | . | . | ||||||
| Small Heath | . | . | . | . | 2 | 20 | 33 | 106 | 53 | 110 | 67 | 44 | 32 | 14 | 2 | 3 | 3 | . | . | . | ||||||
| Ringlet | . | . | . | . | . | . | . | . | 1 | 14 | 28 | 35 | 9 | . | . | . | . | . | . | . | ||||||