
| 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 | 21 | . | . | . | . | . | . | . | . | . | 1 | 3 | 2 | 4 | 4 | 2 | 4 | . | . | . | |||||||
| Dingy Skipper | 24 | . | . | . | . | . | . | 3 | 3 | 6 | 11 | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 24 | . | . | 2 | 1 | 1 | 7 | 1 | 3 | 3 | . | . | . | . | . | . | . | . | . | 1 | |||||||
| Large White | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 2 | 1 | . | |||||||
| Small White | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 1 | 1 | . | 1 | 2 | |||||||
| Green-veined White | NI | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||
| Northern Brown Argus | 26 | . | . | . | . | . | . | . | . | . | . | . | 3 | 6 | 8 | 7 | 2 | 2 | . | . | |||||||
| Common Blue | 27 | . | . | . | . | . | . | . | 1 | 4 | 1 | . | 4 | 8 | 2 | . | 1 | 2 | 1 | 1 | |||||||
| Holly Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | |||||||
| Red Admiral | 5 | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | 1 | . | . | . | . | . | |||||||
| Painted Lady | 15 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 2 | . | 2 | . | . | 2 | |||||||
| Small Tortoiseshell | 23 | . | 2 | 5 | . | 1 | 2 | . | . | . | . | . | . | 4 | 6 | 4 | . | . | . | . | |||||||
| Peacock | 6 | . | 1 | . | 1 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Pearl-bordered Fritillary | 14 | . | . | . | . | . | . | . | . | . | 5 | 3 | 5 | . | . | . | . | . | . | . | |||||||
| Pearl-bordered Fritillary | 3 | . | . | . | . | . | . | . | . | 5 | . | . | . | . | . | . | . | . | . | . | |||||||
| High Brown Fritillary | 150 | . | . | . | . | . | . | . | . | . | . | . | 13 | 16 | 49 | 27 | 30 | 4 | 1 | 4 | |||||||
| Dark Green Fritillary | 422 | . | . | . | . | . | . | . | . | . | . | 6 | 42 | 189 | 109 | 42 | 24 | 5 | 2 | 2 | |||||||
| Speckled Wood | 91 | . | . | . | 1 | 9 | 9 | 6 | 1 | 4 | 1 | 8 | 1 | 12 | 2 | 1 | 7 | 10 | 4 | 1 | |||||||
| Wall Brown | 22 | . | . | . | . | . | . | 2 | 10 | . | . | . | 1 | . | . | . | . | 7 | . | . | |||||||
| Scotch Argus | 503 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 116 | 188 | 59 | 20 | |||||||
| Grayling | 65 | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 17 | 15 | 9 | 13 | 1 | 4 | . | |||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | |||||||
| Meadow Brown | 372 | . | . | . | . | . | . | . | . | . | . | 3 | 24 | 78 | 91 | 51 | 57 | 24 | 18 | 8 | |||||||
| Small Heath | 62 | . | . | . | . | . | . | 1 | 10 | 19 | 15 | 6 | 2 | 9 | 1 | 1 | 1 | . | 1 | . | |||||||