
| 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 | 6 | 31 | 44 | 38 | 66 | 45 | 26 | 6 | 1 | . | . | ||||||
| Large Skipper | . | . | . | . | . | . | . | . | 4 | 5 | 12 | 20 | . | 5 | 4 | 1 | . | . | . | . | ||||||
| Wood White | . | . | . | . | . | . | . | 1 | 1 | . | 4 | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Brimstone | 4 | 2 | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | ||||||
| Large White | . | . | . | 5 | 1 | 2 | . | 1 | . | . | . | 1 | 15 | 17 | 10 | 1 | 3 | . | . | . | ||||||
| Small White | . | . | . | . | . | 3 | . | . | 1 | . | 1 | 2 | 9 | 17 | 14 | 12 | 14 | 7 | 17 | 10 | ||||||
| Green-veined White | . | 1 | 1 | 1 | 4 | 2 | . | . | . | . | . | 1 | 2 | 1 | 2 | 1 | 7 | 1 | 2 | 4 | ||||||
| Orange Tip | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 5 | 6 | 2 | 2 | . | ||||||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | 2 | 1 | . | . | ||||||
| Common Blue | . | . | . | . | . | . | . | 1 | . | 2 | 5 | . | . | 1 | 13 | 59 | 55 | 34 | 17 | 1 | ||||||
| White Admiral | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 3 | . | . | . | . | . | . | ||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 1 | . | ||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | . | 1 | ||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 4 | 2 | ||||||
| Peacock | 2 | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | 7 | 2 | 9 | 1 | . | . | ||||||
| Comma | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Speckled Wood | . | 3 | . | . | 5 | . | . | 1 | 2 | 15 | 2 | . | 2 | 2 | 5 | 3 | 12 | 21 | 67 | 42 | ||||||
| Marbled White | . | . | . | . | . | . | . | . | . | 1 | 13 | 27 | 32 | 14 | 5 | 1 | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 14 | 23 | 29 | 14 | 4 | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 17 | 22 | 41 | 58 | 53 | 14 | 15 | 4 | 4 | . | . | ||||||
| Small Heath | . | . | . | . | . | . | . | . | 2 | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Ringlet | . | . | . | . | . | . | . | . | . | 49 | 52 | 50 | 53 | 68 | 21 | 2 | . | . | . | . | ||||||