
| 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 | 111 | . | . | . | . | . | . | 1 | 3 | 7 | 22 | 23 | 18 | 13 | 15 | 5 | 2 | . | . | . | . | . | . | . | |||
| Dingy Skipper | 4 | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | 34 | 3 | . | 1 | 6 | . | 1 | . | . | 1 | . | . | . | . | . | . | 1 | 5 | 1 | 2 | 6 | 2 | . | 3 | |||
| Large White | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | |||
| Green-veined White | 16 | . | . | . | . | . | 1 | 3 | . | . | . | 1 | . | . | . | 1 | 2 | 5 | . | 1 | . | . | . | . | |||
| Orange Tip | 16 | . | . | . | 1 | 10 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Purple Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 2 | . | . | . | . | |||
| Northern Brown Argus | 10 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | 3 | 3 | . | . | . | . | . | . | . | |||
| Common Blue | 9 | . | . | . | . | . | . | 1 | . | . | . | 4 | . | 1 | 1 | . | 1 | . | . | . | . | . | . | . | |||
| Holly Blue | NI | . | . | . | 6 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Duke of Burgundy Fritillary | 3 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Red Admiral | 19 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 8 | 3 | . | 3 | . | . | 1 | |||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | |||
| Peacock | 41 | 2 | 2 | 3 | 7 | 2 | 1 | . | . | . | . | . | . | . | . | . | 3 | 6 | 4 | 6 | 1 | 4 | . | . | |||
| Small Pearl-bordered Fritillary | 46 | . | . | . | . | . | . | . | 2 | 9 | 10 | 14 | 2 | 5 | 3 | . | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | 81 | . | . | . | . | . | 1 | 16 | 11 | 30 | 4 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | |||
| High Brown Fritillary | 226 | . | . | . | . | . | . | . | . | . | . | 7 | 10 | 39 | 69 | 47 | 34 | 14 | 6 | . | . | . | . | . | |||
| Speckled Wood | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | 1 | 2 | . | . | 1 | . | |||
| Wall Brown | 6 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 5 | . | . | . | . | . | . | |||
| Meadow Brown | 196 | . | . | . | . | . | . | . | . | . | . | . | 4 | 6 | 43 | 50 | 57 | 23 | 9 | 2 | 1 | 1 | . | . | |||