
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | . | 14 | 11 | 18 | 5 | 1 | . | . | . | . | . | . | . | ||||||
| Large White | . | . | . | . | . | 7 | 2 | 1 | . | . | 2 | 1 | 9 | 1 | 3 | . | 1 | . | . | . | ||||||
| Small White | . | 2 | 3 | 3 | 1 | 3 | . | . | . | . | 3 | 4 | 8 | . | 4 | . | 1 | . | . | . | ||||||
| Green-veined White | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | . | 3 | 1 | 1 | 1 | . | . | . | . | . | 2 | . | . | 1 | . | 4 | . | . | ||||||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Common Blue | . | . | . | . | 1 | 12 | 32 | 6 | 4 | . | 1 | 7 | 43 | 133 | 124 | 85 | 29 | 10 | 2 | . | ||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||
| Small Tortoiseshell | 1 | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | 1 | 1 | . | ||||||
| Peacock | . | 3 | 1 | . | . | . | . | . | . | . | . | 3 | 3 | . | . | 1 | 1 | . | . | . | ||||||
| Wall Brown | . | . | . | . | 2 | 1 | 3 | . | . | . | . | . | . | 10 | 11 | 13 | 6 | . | 1 | . | ||||||
| Grayling | . | . | . | . | . | . | . | . | . | 8 | 27 | 50 | 24 | 2 | 1 | 1 | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 15 | 20 | 26 | 11 | 8 | 2 | . | . | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | 4 | 26 | 56 | 40 | 48 | 31 | 20 | 8 | 3 | 3 | . | . | . | ||||||
| Small Heath | . | . | . | . | 2 | 26 | 33 | 25 | 35 | 17 | 11 | 6 | 1 | 7 | 15 | 22 | 25 | 7 | 1 | 1 | ||||||