
| 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 | Ind | ||||||||||||||||||||||||||
| Small Skipper | 31 | . | . | . | . | . | . | . | . | . | 1 | 2 | 5 | 7 | 7 | 3 | . | . | . | . | . | ||||||
| Large Skipper | 2 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | 33 | . | . | 1 | 21 | 10 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 57 | . | . | 2 | 8 | 22 | 4 | 6 | 10 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | ||||||
| Brimstone | 57 | . | 3 | 8 | 4 | 6 | 7 | . | 3 | 1 | 3 | . | . | 1 | 4 | 3 | 3 | . | 3 | 3 | . | ||||||
| Large White | 44 | . | . | . | 1 | 1 | 1 | 1 | 2 | . | 1 | . | 1 | 8 | 7 | 6 | 3 | 3 | 2 | 2 | . | ||||||
| Small White | 93 | . | . | . | . | 2 | 4 | 2 | 1 | . | 2 | . | 2 | 21 | 10 | 12 | 1 | 1 | 6 | 5 | . | ||||||
| Green-veined White | 46 | . | . | 2 | 5 | 5 | 1 | 1 | 1 | . | . | . | . | 9 | 4 | 8 | . | 4 | 2 | 1 | . | ||||||
| Orange Tip | 8 | . | . | 2 | . | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 4 | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 5 | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | ||||||
| Brown Argus | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | . | . | . | ||||||
| Common Blue | 129 | . | . | . | . | 25 | 10 | 16 | 10 | 4 | 1 | 2 | . | 1 | . | 6 | 7 | 9 | 2 | 4 | 1 | ||||||
| Chalk-hill Blue | 223 | . | . | . | . | . | . | . | . | . | . | 1 | . | 24 | 74 | 68 | 25 | 17 | 4 | . | 2 | ||||||
| Adonis Blue | 32 | . | . | . | 3 | 10 | 1 | 5 | . | . | . | . | . | . | . | . | . | 5 | 1 | 1 | 1 | ||||||
| Holly Blue | 32 | . | 5 | 5 | 8 | . | . | . | . | . | . | . | . | 8 | 3 | 2 | . | 1 | . | 1 | . | ||||||
| Duke of Burgundy Fritillary | 5 | . | . | . | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 15 | . | . | . | 1 | . | . | . | . | 1 | . | . | . | 1 | 1 | 1 | . | . | 5 | 2 | 1 | ||||||
| Painted Lady | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | ||||||
| Small Tortoiseshell | 40 | . | . | . | 3 | . | . | . | . | . | 1 | 1 | 4 | 6 | 2 | . | . | . | 8 | 13 | . | ||||||
| Peacock | 23 | 3 | 1 | 4 | . | 2 | . | . | . | . | . | . | . | 4 | 4 | 1 | . | . | . | . | . | ||||||
| Comma | 6 | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | . | 2 | ||||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||
| Speckled Wood | 133 | . | 3 | 5 | 1 | 1 | 5 | 7 | . | 2 | 2 | . | . | 9 | 8 | 9 | 22 | 10 | 19 | 2 | 3 | ||||||
| Wall Brown | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Marbled White | 71 | . | . | . | . | . | . | . | . | 6 | 23 | 24 | 17 | . | 1 | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 195 | . | . | . | . | . | . | . | . | . | 3 | 2 | 16 | 61 | 37 | 22 | 14 | 2 | . | 2 | . | ||||||
| Meadow Brown | 4851 | . | . | . | . | . | . | 2 | 14 | 22 | 49 | 26 | 48 | 529 | 739 | 997 | 751 | 524 | 260 | 85 | 61 | ||||||
| Small Heath | 278 | . | . | . | . | 6 | 2 | 7 | 33 | 30 | 50 | 57 | 31 | 18 | 8 | 1 | 1 | 2 | 2 | . | . | ||||||
| Ringlet | 22 | . | . | . | . | . | . | . | 1 | . | 6 | 1 | 8 | 1 | 1 | . | . | . | . | . | . | ||||||