
| 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 | 59 | . | . | . | . | . | . | . | . | . | 8 | 7 | 17 | 11 | 8 | 3 | . | . | . | . | . | . | . | . | |||
| Dingy Skipper | 2 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | 38 | 2 | 1 | 1 | 5 | 1 | 3 | 3 | 1 | 1 | . | . | . | . | . | 7 | 5 | . | 1 | 3 | . | . | . | . | |||
| Large White | 5 | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | |||
| Green-veined White | 32 | . | . | . | 3 | 3 | . | 2 | . | 1 | . | . | 1 | 1 | 2 | 4 | 2 | 2 | 1 | 2 | 2 | 1 | . | . | |||
| Orange Tip | 2 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Common Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||
| Holly Blue (Northern) | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Duke of Burgundy Fritillary | 5 | . | . | . | 1 | 2 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Red Admiral | 68 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 1 | 4 | 36 | 25 | |||
| Peacock | NI | 4 | 1 | 4 | 9 | 2 | 1 | . | . | . | 1 | . | . | . | . | . | . | 2 | 1 | . | . | . | . | 1 | |||
| Comma | 15 | 1 | . | . | 1 | . | . | . | 1 | . | . | . | . | . | 1 | 1 | . | . | . | 1 | . | 1 | 3 | 3 | |||
| Small Pearl-bordered Fritillary | 3 | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | 21 | . | . | . | . | 1 | 7 | 4 | 6 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| High Brown Fritillary | 53 | . | . | . | . | . | . | . | . | . | . | . | 4 | 15 | 14 | 6 | 3 | . | . | . | . | . | . | . | |||
| Speckled Wood | 417 | . | . | . | 3 | 1 | 3 | 1 | 1 | 8 | 2 | 8 | 16 | 12 | 3 | 8 | . | 11 | 26 | 22 | 38 | 89 | 71 | 91 | |||
| Wall Brown | 4 | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | |||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | 2 | . | 16 | 30 | 73 | 39 | 14 | 1 | 1 | . | . | . | . | . | |||