
| 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 | . | . | . | . | . | . | . | 3 | 13 | 11 | . | . | . | . | . | 3 | . | . | ||||||||
| Large White | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | 1 | . | . | . | . | ||||||||
| Small White | . | . | . | . | 3 | . | . | . | . | . | 2 | 1 | 8 | 5 | 7 | 7 | 4 | . | ||||||||
| Small Copper | . | . | 5 | 2 | . | . | . | . | . | . | 3 | 1 | 2 | 3 | . | . | . | . | ||||||||
| Common Blue | . | . | . | . | 22 | . | . | . | 1 | . | . | 1 | 15 | 23 | 6 | . | . | . | ||||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 4 | 6 | 10 | . | 2 | ||||||||
| Painted Lady | . | . | . | . | . | . | . | . | 1 | 2 | . | . | 2 | 6 | . | 4 | . | 1 | ||||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | 3 | . | . | 6 | 23 | 61 | 67 | 3 | 7 | ||||||||
| Peacock | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 11 | . | 1 | . | . | ||||||||
| Wall Brown | . | . | 2 | 5 | 7 | . | . | . | . | . | . | 2 | 9 | 13 | . | . | . | 1 | ||||||||
| Grayling | . | . | . | . | . | . | . | . | 2 | 16 | 14 | 8 | 18 | 9 | . | . | . | . | ||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | 1 | 43 | 68 | 34 | 9 | 6 | . | . | . | . | ||||||||
| Meadow Brown | . | . | . | . | . | . | 3 | 28 | 33 | 63 | 44 | 20 | 18 | 9 | . | . | . | . | ||||||||
| Small Heath | . | . | . | 5 | 14 | 4 | 12 | 5 | 22 | 9 | 4 | 2 | 10 | 14 | 4 | 10 | 1 | 2 | ||||||||