
| 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 | . | . | . | . | . | . | 4 | 38 | 22 | 10 | 10 | . | . | 4 | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | . | . | . | . | . | 2 | 2 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | . | 6 | 10 | . | 8 | . | . | . | . | . | . | . | . | 2 | 14 | 10 | 30 | 30 | 18 | 28 | 26 | . | ||||
| Large White | . | 2 | . | . | 2 | 6 | 2 | 4 | . | 2 | 2 | . | 2 | . | 4 | 24 | 38 | 2 | . | . | . | . | ||||
| Small White | . | . | 2 | . | 4 | 2 | . | . | . | . | . | . | . | . | 8 | 14 | 18 | 2 | . | 2 | 4 | . | ||||
| Green-veined White | . | 4 | 18 | 22 | 18 | 26 | 20 | 12 | 4 | . | . | 12 | 26 | 36 | 40 | 18 | 12 | . | 12 | 6 | 6 | 2 | ||||
| Orange Tip | . | . | 6 | 2 | 6 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 4 | . | . | . | . | . | 2 | . | ||||
| Northern Brown Argus | . | . | . | . | . | . | 2 | 24 | 12 | 26 | 26 | 12 | 2 | . | . | 2 | 2 | . | . | . | . | . | ||||
| Common Blue | . | . | . | . | . | . | . | 6 | 8 | 4 | . | . | . | . | 10 | 8 | 2 | 4 | . | 2 | 2 | . | ||||
| Holly Blue | . | . | . | . | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Duke of Burgundy Fritillary | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 10 | 22 | 8 | 4 | 14 | 14 | 2 | ||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 8 | 6 | 2 | 6 | . | . | ||||
| Small Tortoiseshell | . | 2 | 2 | . | 2 | . | . | . | 2 | 4 | 14 | 10 | 12 | 12 | 18 | 6 | 2 | 4 | . | 2 | 10 | . | ||||
| Peacock | 6 | 22 | 14 | 6 | 10 | 2 | 4 | . | . | . | . | . | . | . | 66 | 52 | 68 | 18 | 6 | 8 | 10 | . | ||||
| Pearl-bordered Fritillary | . | . | . | . | 18 | 20 | 44 | 28 | 8 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| High Brown Fritillary | . | . | . | . | . | . | . | . | 2 | 14 | 18 | 20 | 22 | 24 | 16 | 8 | 6 | . | . | . | . | . | ||||
| Wall Brown | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | 10 | 36 | 16 | 4 | 2 | . | . | ||||
| Scotch Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 2 | . | . | . | . | . | ||||
| Grayling | . | . | . | . | . | . | . | . | . | . | 8 | 4 | 14 | 6 | 8 | 14 | 6 | . | . | . | . | . | ||||
| Meadow Brown | . | . | . | . | . | . | . | . | 12 | 22 | 30 | 78 | 82 | 46 | 80 | 62 | 40 | . | . | . | . | . | ||||
| Small Heath | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||