
| 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 | 123 | . | . | . | . | . | . | . | . | . | . | 33 | 45 | 25 | 11 | 3 | 2 | 1 | . | . | . | ||||||
| Essex Skipper | 6 | . | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 1 | . | 1 | . | . | . | . | ||||||
| Large Skipper | 51 | . | . | . | . | . | . | 3 | 11 | 15 | 16 | 1 | 2 | 3 | . | . | . | . | . | . | . | ||||||
| Wood White | 19 | . | . | . | . | . | . | 6 | 8 | 3 | 1 | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 11 | . | 4 | . | 3 | . | . | 1 | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | ||||||
| Large White | 7 | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 2 | . | . | . | ||||||
| Small White | 25 | . | . | . | . | 1 | . | . | . | . | . | . | 2 | 2 | 3 | 9 | 2 | 3 | 2 | . | . | ||||||
| Green-veined White | 48 | . | 3 | 2 | 9 | 9 | 9 | 4 | . | . | . | . | . | . | 1 | 6 | 3 | 2 | . | . | . | ||||||
| Orange Tip | 4 | . | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brown Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Purple Hairstreak | 7 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 4 | . | . | . | . | . | ||||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | ||||||
| Common Blue | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | ||||||
| Holly Blue | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | ||||||
| White Admiral | 17 | . | . | . | . | . | . | . | . | . | 1 | 10 | 1 | 3 | 2 | . | . | . | . | . | . | ||||||
| Purple Emperor | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Peacock | 10 | . | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | 4 | 2 | 1 | . | . | . | ||||||
| Comma | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | ||||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 129 | 1 | 6 | 3 | 6 | 2 | 5 | 6 | 10 | 5 | . | 5 | 2 | 3 | 5 | 21 | 11 | 9 | 8 | 2 | 14 | ||||||
| Wall Brown | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Marbled White | 3 | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 207 | . | . | . | . | . | . | . | . | . | 12 | 3 | 26 | 35 | 51 | 32 | 29 | 13 | 4 | . | . | ||||||
| Meadow Brown | 344 | . | . | . | . | . | . | . | . | 12 | 38 | 112 | 108 | 45 | 21 | 1 | 3 | 2 | 1 | . | . | ||||||
| Ringlet | 93 | . | . | . | . | . | . | . | . | . | 9 | 22 | 17 | 29 | 11 | 4 | 1 | . | . | . | . | ||||||
| Unknown White | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 5 | . | . | . | . | ||||||