
| 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 | ||||||||||||||||||||||||||
| Large Skipper | . | . | . | . | . | . | . | . | 1 | 1 | 2 | . | 1 | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | . | . | . | . | . | 1 | 3 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | . | 1 | . | . | 1 | . | . | . | 1 | . | . | . | 1 | . | . | . | 1 | 2 | . | . | . | |||||
| Large White | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | 1 | 3 | 1 | 2 | . | . | |||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | . | 1 | . | |||||
| Green-veined White | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Northern Brown Argus | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 4 | 1 | 1 | . | . | . | . | . | . | |||||
| Common Blue | . | . | . | . | . | . | . | . | . | 1 | . | . | 3 | . | . | 2 | 2 | 2 | 2 | 3 | 2 | |||||
| Red Admiral | . | . | . | . | . | . | . | 1 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 2 | 7 | 2 | 1 | 2 | . | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Peacock | 2 | 2 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | 1 | 1 | 3 | |||||
| Small Pearl-bordered Fritillary | . | . | . | . | . | . | . | . | . | 6 | 5 | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| High Brown Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | 20 | 30 | 11 | 13 | 9 | 3 | 2 | . | . | |||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | 4 | 57 | 85 | 138 | 84 | 11 | 5 | 5 | 1 | 2 | . | . | |||||
| Speckled Wood | . | . | 5 | 21 | 9 | . | . | . | . | 10 | 12 | 12 | 12 | 2 | . | 1 | 10 | . | 9 | 5 | 9 | |||||
| Wall Brown | . | . | . | . | . | 1 | 6 | 3 | 17 | 2 | 1 | . | . | . | . | . | 8 | 10 | 10 | 4 | 6 | |||||
| Scotch Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | 18 | 115 | 304 | 257 | 183 | 69 | 21 | 3 | |||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | . | 6 | . | 2 | 3 | 6 | 3 | 5 | . | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 1 | 29 | 76 | 136 | 85 | 54 | 40 | 29 | 11 | 8 | 1 | . | |||||
| Small Heath | . | . | . | . | . | . | 2 | 3 | 4 | 14 | 6 | 4 | 3 | 2 | . | . | 1 | 1 | 1 | . | . | |||||