
| 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 | . | . | . | . | . | . | . | . | . | . | 4 | 27 | 36 | 33 | 30 | 7 | 4 | . | . | . | ||||||
| Silver-spotted Skipper | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 3 | 1 | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | . | . | . | 3 | 3 | 2 | . | . | 1 | . | . | . | . | . | . | ||||||
| Dingy Skipper | . | . | . | 7 | 5 | 2 | 4 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | . | . | 1 | 7 | 7 | . | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||
| Brimstone | 1 | 7 | 6 | 3 | 3 | 1 | 1 | 3 | . | 1 | . | 1 | 3 | 1 | 14 | 4 | 2 | 2 | . | 4 | ||||||
| Large White | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 8 | 1 | 2 | 4 | . | . | . | ||||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 5 | 39 | 11 | 15 | 8 | 12 | . | ||||||
| Green-veined White | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | ||||||
| Green Hairstreak | . | . | 1 | 2 | . | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | 1 | . | . | 3 | ||||||
| Small Blue | . | . | . | . | 3 | . | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brown Argus | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 2 | 7 | 10 | 4 | . | ||||||
| Common Blue | . | . | . | . | . | 2 | 1 | 4 | 1 | 1 | . | . | 3 | 6 | 9 | 36 | 26 | 10 | 2 | . | ||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 9 | 15 | 17 | 8 | 1 | 1 | . | ||||||
| Adonis Blue | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | 4 | 9 | . | ||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | 1 | . | ||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | 2 | 3 | 14 | 4 | 2 | ||||||
| Peacock | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 2 | 6 | 2 | . | . | 1 | . | ||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | 7 | 7 | 15 | 16 | 19 | 13 | 5 | . | . | . | . | ||||||
| Speckled Wood | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | ||||||
| Marbled White | . | . | . | . | . | . | . | . | . | 23 | 73 | 48 | 19 | 7 | . | . | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 2 | 1 | 13 | 25 | 12 | 9 | 3 | 2 | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | . | 4 | 29 | 58 | 32 | 53 | 78 | 96 | 112 | 70 | 20 | 9 | 3 | ||||||
| Small Heath | . | . | . | . | 1 | 2 | 12 | 13 | 32 | 120 | 177 | 122 | 53 | 11 | 5 | 5 | 22 | 51 | 32 | 12 | ||||||
| Ringlet | . | . | . | . | . | . | . | . | . | 21 | 44 | 19 | 4 | . | . | . | . | . | . | . | ||||||