
| 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 | . | . | . | . | . | . | . | . | 2 | 4 | 2 | 12 | 2 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | . | . | . | . | . | . | 6 | 14 | 6 | 4 | 4 | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | . | . | . | . | . | . | . | 8 | 4 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 32 | 16 | 10 | 12 | 12 | 8 | . | . | . | . | . | 2 | . | . | 8 | 18 | 16 | 6 | 6 | 14 | ||||||
| Large White | . | . | . | . | . | 2 | . | . | . | . | . | . | . | 4 | 4 | 14 | 4 | 4 | 2 | 4 | ||||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 12 | 2 | 2 | 2 | . | 4 | ||||||
| Green-veined White | . | . | . | . | 4 | 2 | 4 | 2 | . | . | . | . | . | 20 | 18 | 4 | 12 | 6 | 2 | . | ||||||
| Orange Tip | . | . | . | 6 | 10 | . | . | 6 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Northern Brown Argus | . | . | . | . | . | . | . | . | . | . | 2 | . | 6 | 4 | . | . | . | . | . | . | ||||||
| Common Blue | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | 2 | . | . | ||||||
| Holly Blue | . | . | 2 | 4 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Duke of Burgundy Fritillary | . | . | . | . | . | 8 | 12 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 2 | . | 2 | . | . | . | . | . | . | . | . | . | 2 | 6 | 14 | 12 | 8 | . | 2 | . | ||||||
| Peacock | 20 | 8 | 16 | 2 | 2 | 4 | 2 | . | 2 | . | . | . | . | . | 20 | 44 | 20 | 12 | 6 | 2 | ||||||
| Pearl-bordered Fritillary | . | . | . | . | . | 10 | 92 | 68 | 24 | 8 | . | 2 | . | . | . | . | . | . | . | . | ||||||
| High Brown Fritillary | . | . | . | . | . | . | . | . | . | . | . | 6 | 24 | 14 | . | . | . | . | . | . | ||||||
| Speckled Wood | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Wall Brown | . | . | . | . | . | . | 12 | 22 | 4 | . | . | . | . | . | . | 8 | 4 | 6 | 8 | . | ||||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | 6 | 4 | 8 | 4 | . | . | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 4 | 38 | 94 | 170 | 192 | 66 | 28 | 6 | 4 | . | . | ||||||
| Small Heath | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||