
| 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 | 63 | . | . | . | . | . | . | . | 2 | 4 | 18 | 16 | 5 | 12 | 5 | 1 | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 4 | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 123 | 10 | 9 | 12 | 2 | 11 | 2 | 8 | 2 | . | . | . | . | . | . | . | 15 | 10 | 23 | 18 | 1 | . | . | ||||
| Large White | 30 | . | . | . | . | 1 | 6 | 5 | 2 | 1 | . | . | . | . | 1 | 1 | 8 | 4 | 1 | . | . | . | . | ||||
| Small White | 5 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | ||||
| Green-veined White | 209 | . | . | 1 | 8 | 7 | 17 | 14 | 7 | 6 | 3 | . | 2 | 1 | 11 | 26 | 56 | 32 | 9 | 2 | 1 | 4 | . | ||||
| Orange Tip | 27 | . | . | . | 4 | 7 | 10 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | . | . | . | ||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | ||||
| Common Blue | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 3 | ||||
| Holly Blue | NI | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | 16 | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | 5 | 1 | 2 | . | . | . | . | 3 | 1 | ||||
| Peacock | 84 | 16 | 18 | 13 | 2 | 7 | 5 | 1 | . | . | . | . | . | . | . | . | 12 | 6 | 3 | 1 | . | . | . | ||||
| Small Pearl-bordered Fritillary | 19 | . | . | . | . | . | . | 7 | 9 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 64 | . | . | . | 3 | 11 | 20 | 22 | 4 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| High Brown Fritillary | 27 | . | . | . | . | . | . | . | . | . | . | 1 | . | 5 | 6 | 6 | 8 | . | 1 | . | . | . | . | ||||
| Wall Brown | 12 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | 1 | 1 | 5 | 3 | . | . | ||||
| Grayling | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | ||||
| Meadow Brown | 333 | . | . | . | . | . | . | . | . | . | 1 | 7 | 29 | 70 | 70 | 63 | 66 | 22 | 4 | 1 | . | . | . | ||||