
| 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 | . | . | . | . | . | . | . | . | . | . | 10 | 26 | 30 | 4 | 18 | . | 2 | . | . | . | . | . | . | . | ||
| Dingy Skipper | . | . | . | . | . | 2 | 4 | 2 | 6 | 2 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Brimstone | 6 | 6 | 10 | 32 | 6 | 10 | 4 | 6 | 16 | 2 | . | . | . | . | . | . | 2 | . | 4 | 24 | 34 | . | . | . | ||
| Large White | . | . | . | . | . | . | . | 2 | 2 | 6 | . | . | . | . | . | . | 4 | 4 | 10 | 6 | . | 2 | . | . | ||
| Small White | . | . | . | . | . | . | 6 | 8 | . | 2 | . | 2 | . | . | . | . | 6 | 2 | 4 | 2 | 4 | 4 | . | . | ||
| Green-veined White | . | . | . | . | 2 | 4 | 4 | 4 | 6 | 8 | 4 | . | . | . | . | 4 | 10 | 10 | 14 | 2 | 4 | . | . | . | ||
| Orange Tip | . | . | . | . | 12 | 10 | 10 | 12 | 4 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 2 | . | . | 2 | . | . | . | ||
| Small Copper | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 4 | 8 | 2 | 12 | 12 | 8 | 4 | . | ||
| Northern Brown Argus | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 4 | 16 | 10 | 14 | 6 | . | 6 | 10 | 8 | 4 | . | . | ||
| Common Blue | . | . | . | . | . | . | . | . | . | . | 12 | . | . | . | . | . | 16 | 4 | 6 | 22 | 10 | 6 | 2 | 2 | ||
| Holly Blue | . | . | . | . | 8 | 6 | 6 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Duke of Burgundy Fritillary | . | . | . | . | . | . | 2 | 6 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | 6 | ||
| Small Tortoiseshell | . | . | . | . | 4 | 2 | . | . | . | . | . | . | . | 2 | 8 | 16 | 4 | . | 2 | . | . | . | 2 | 4 | ||
| Peacock | 4 | 8 | 10 | 20 | 20 | 14 | 4 | 8 | 4 | 4 | . | . | . | . | . | . | 10 | 34 | 38 | 34 | 6 | 2 | . | . | ||
| Pearl-bordered Fritillary | . | . | . | . | . | 22 | 52 | 96 | 58 | 36 | 18 | 2 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | ||
| High Brown Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 12 | 32 | 26 | 52 | 16 | 12 | 6 | . | . | . | . | ||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | ||
| Wall Brown | . | . | . | . | . | . | . | 4 | 20 | 16 | 4 | . | . | . | . | . | . | 14 | . | 14 | 32 | 24 | 6 | . | ||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 10 | 22 | 18 | 26 | 10 | 12 | 6 | . | . | . | . | ||
| Meadow Brown | . | . | . | . | . | . | . | . | . | . | 2 | 10 | 28 | 88 | 198 | 142 | 96 | 84 | 54 | 18 | 10 | . | . | . | ||
| Small Heath | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||