
| 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 White | . | . | . | . | . | . | . | 1 | . | . | . | . | 2 | . | 2 | 1 | 6 | 1 | ||||||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | 2 | . | ||||||||
| Green-veined White | 1 | . | 5 | . | . | 4 | 2 | 8 | 2 | . | . | . | . | 10 | 7 | 11 | 4 | 4 | ||||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 11 | ||||||||
| Northern Brown Argus | . | . | . | . | . | . | . | . | . | 6 | 5 | 3 | 3 | 5 | 2 | . | . | . | ||||||||
| Common Blue | . | . | . | . | . | . | . | . | 1 | 8 | 8 | 13 | 9 | 8 | 2 | 3 | 2 | 1 | ||||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 7 | . | . | ||||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | ||||||||
| Small Tortoiseshell | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | ||||||||
| Peacock | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | 2 | 8 | 10 | 5 | 2 | 6 | 2 | ||||||||
| Meadow Brown | . | . | . | . | . | . | . | . | 1 | 12 | 29 | 115 | 112 | 91 | 72 | 38 | 19 | 5 | ||||||||
| Ringlet | . | . | . | . | . | . | . | . | . | 46 | 44 | 90 | 46 | 25 | 17 | 4 | 1 | . | ||||||||