
| 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 | 55 | . | . | . | . | . | . | . | 6 | 7 | 8 | 17 | 7 | 2 | . | . | . | . | . | ||||||||
| Swallowtail | 18 | . | . | . | . | 1 | 5 | 4 | 3 | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | 144 | 1 | 3 | 7 | 17 | 5 | 5 | 9 | 6 | 3 | . | . | 10 | 8 | 10 | 3 | 14 | 6 | 8 | ||||||||
| Large White | 58 | . | . | . | 2 | 1 | . | . | . | . | . | 5 | 12 | 19 | 2 | . | . | . | . | ||||||||
| Small White | 17 | . | . | . | 1 | . | . | . | . | . | . | . | . | 4 | 5 | . | . | . | . | ||||||||
| Green-veined White | 152 | . | . | 8 | 8 | 6 | 11 | 4 | 1 | 1 | . | . | 24 | 24 | 17 | 4 | 2 | . | . | ||||||||
| Orange Tip | 8 | . | . | 2 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 7 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 1 | 1 | 1 | . | ||||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Tortoiseshell | 20 | 4 | 1 | . | . | . | . | . | . | . | 1 | 6 | . | 1 | . | 1 | 1 | 1 | 1 | ||||||||
| Peacock | 33 | 4 | 4 | . | 3 | . | . | . | . | . | . | . | . | 6 | 2 | 1 | 5 | 1 | . | ||||||||
| Comma | 18 | . | 1 | 1 | 1 | . | . | . | . | . | . | 1 | 2 | 3 | 1 | 1 | 2 | . | . | ||||||||
| Wall Brown | 3 | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 47 | . | . | . | . | . | . | . | . | . | 2 | 1 | 14 | 11 | 4 | . | . | . | . | ||||||||
| Meadow Brown | 12 | . | . | . | . | . | . | . | . | . | 1 | 2 | 2 | 3 | 1 | . | . | . | . | ||||||||
| Ringlet | 39 | . | . | . | . | . | . | . | . | 1 | 9 | 21 | 4 | 1 | . | . | . | . | . | ||||||||