
| 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 | . | . | . | . | . | . | . | . | . | . | 2 | 16 | 13 | 12 | . | 1 | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | . | . | 6 | 6 | 8 | . | . | 1 | 1 | . | . | 1 | . | . | . | ||||||
| Dingy Skipper | . | . | . | 6 | 1 | 3 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 1 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large White | . | . | . | 5 | . | . | 1 | 3 | . | . | . | . | 1 | 3 | 11 | 4 | 1 | . | . | . | ||||||
| Small White | . | . | . | 1 | . | . | . | . | . | . | . | 3 | 3 | 3 | 5 | 4 | . | . | . | . | ||||||
| Green-veined White | . | . | . | 3 | . | 1 | 2 | 1 | . | . | . | . | 1 | 3 | 2 | 1 | . | . | . | . | ||||||
| Orange Tip | . | . | . | 5 | 1 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | . | . | . | 4 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Small Blue | . | . | . | . | . | . | . | . | 3 | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Brown Argus | . | . | . | . | . | 1 | 1 | 1 | 1 | . | . | . | . | . | 1 | . | . | . | . | 1 | ||||||
| Common Blue | . | . | . | . | . | 1 | 5 | 15 | 8 | 3 | . | . | . | . | 5 | 18 | 47 | 37 | 1 | . | ||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | 1 | 16 | 89 | 190 | 141 | 43 | 38 | 25 | 12 | 2 | . | ||||||
| Duke of Burgundy Fritillary | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 5 | 4 | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 3 | 1 | . | . | . | 1 | 5 | ||||||
| Peacock | 1 | . | 5 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 1 | . | . | . | ||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | 5 | 1 | 1 | . | . | 1 | . | . | . | . | . | . | ||||||
| Speckled Wood | . | . | . | . | 1 | . | . | . | 2 | . | . | . | 1 | . | 1 | 1 | . | . | . | . | ||||||
| Wall Brown | . | . | . | . | . | 3 | 1 | . | . | . | . | . | . | . | 1 | 6 | 8 | 11 | . | . | ||||||
| Marbled White | . | . | . | . | . | . | . | . | 62 | 263 | 86 | 73 | 23 | 8 | . | . | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 4 | 4 | 8 | . | 2 | . | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | 10 | 260 | 292 | 169 | 180 | 178 | 89 | 16 | 19 | 15 | 4 | 1 | . | ||||||
| Small Heath | . | . | . | 12 | 9 | 24 | 13 | 31 | 11 | 11 | 2 | 2 | 1 | . | . | . | 1 | 1 | . | . | ||||||
| Ringlet | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | ||||||