
| 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 | ||||||||||||||||||||||||||
| Large Skipper | 15 | . | . | . | . | . | . | . | 2 | 8 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Large White | 21 | . | . | . | . | . | 2 | 2 | 4 | 5 | 1 | . | . | 2 | . | . | . | 1 | . | . | 1 | 1 | 1 | ||||
| Small White | 68 | 1 | 1 | 1 | 4 | 2 | . | 6 | 4 | 1 | 2 | 1 | . | 1 | 5 | 10 | 8 | 9 | 6 | 6 | . | . | . | ||||
| Green-veined White | 26 | 1 | . | . | . | 1 | 11 | 2 | 4 | 3 | 1 | . | . | . | . | . | . | . | 1 | 2 | . | . | . | ||||
| Orange Tip | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 63 | . | . | . | . | . | . | 3 | 4 | 8 | 4 | . | . | . | 2 | 1 | 6 | 8 | 6 | 6 | 8 | 4 | 2 | ||||
| Silver-studded Blue | 28 | . | . | . | . | . | . | . | . | . | . | 4 | 5 | 8 | 8 | 3 | . | . | . | . | . | . | . | ||||
| Common Blue | 414 | . | . | . | . | . | 9 | 37 | 36 | 35 | 26 | 3 | 1 | 2 | 2 | 15 | 39 | 43 | 51 | 46 | 40 | 23 | 4 | ||||
| Red Admiral | 14 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 1 | 3 | 4 | 2 | 1 | ||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||
| Small Tortoiseshell | 92 | . | 3 | 2 | 1 | . | . | . | 2 | 1 | 2 | 7 | 6 | 6 | 6 | 3 | 6 | 4 | 1 | 2 | 8 | 11 | 14 | ||||
| Peacock | 7 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | ||||
| Small Pearl-bordered Fritillary | 15 | . | . | . | . | . | . | . | 5 | 6 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||
| Wall Brown | 229 | . | . | 1 | 10 | 15 | 66 | 45 | 21 | 5 | 2 | . | . | . | . | . | 7 | 19 | 15 | 14 | 9 | . | . | ||||
| Grayling | 1560 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 168 | 276 | 445 | 376 | 81 | 92 | 83 | 31 | 4 | ||||
| Gatekeeper / Hedge Brown | 78 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 18 | 18 | 24 | 12 | 4 | . | . | . | ||||
| Meadow Brown | 745 | . | . | . | . | . | . | . | . | . | 4 | 34 | 36 | 136 | 145 | 166 | 110 | 86 | 15 | 4 | 4 | 3 | 1 | ||||
| Small Heath | 37 | . | 1 | . | . | . | 3 | 4 | 7 | 3 | 13 | 1 | 1 | . | . | . | . | . | . | . | . | 1 | 2 | ||||