
| 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 | . | . | . | . | . | . | . | . | . | . | . | 14 | 2 | 23 | 11 | 1 | . | . | . | . | ||||||
| Silver-spotted Skipper | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | . | . | . | . | 2 | 3 | 1 | 1 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | . | . | . | 1 | 1 | 3 | 9 | 5 | 7 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | . | . | . | 8 | 5 | 11 | 2 | 4 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 1 | 2 | 1 | 1 | . | . | ||||||
| Brimstone | 9 | 4 | 11 | 11 | 12 | 12 | 18 | 10 | 3 | 2 | . | . | 5 | 2 | 7 | 5 | 5 | 3 | 3 | 1 | ||||||
| Large White | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 1 | . | . | . | . | . | ||||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 7 | 3 | 2 | 1 | 1 | 1 | ||||||
| Green-veined White | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Orange Tip | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | . | 1 | 2 | . | . | ||||||
| Small Blue | . | . | . | . | . | . | . | 2 | 1 | 2 | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Brown Argus | . | . | . | . | 1 | . | 7 | 4 | 1 | 2 | . | . | . | 7 | 3 | 29 | 5 | 9 | 2 | . | ||||||
| Common Blue | . | . | . | . | . | . | 6 | 25 | 44 | 24 | 11 | 3 | 6 | 17 | 33 | 87 | 48 | 48 | 28 | 2 | ||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 10 | 18 | 26 | 14 | 15 | . | . | ||||||
| Adonis Blue | . | . | . | . | . | . | 4 | 6 | 9 | 4 | 2 | . | . | . | . | 17 | 13 | 23 | 19 | 5 | ||||||
| Holly Blue | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | . | . | . | . | . | . | . | 1 | 1 | . | . | . | 1 | 7 | 5 | 4 | . | . | . | . | ||||||
| Painted Lady | . | . | . | . | . | 1 | 5 | 7 | 9 | 1 | . | 1 | 13 | 31 | 15 | 4 | 2 | . | . | . | ||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | . | 8 | 3 | 2 | . | 3 | . | 4 | 1 | . | ||||||
| Peacock | . | 1 | 1 | . | . | . | . | . | . | . | . | . | 2 | 2 | 4 | . | 1 | 1 | . | . | ||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | 12 | 32 | 21 | 16 | 12 | 1 | . | . | . | . | ||||||
| Speckled Wood | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | 24 | 89 | 11 | 11 | 2 | . | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 12 | 49 | 18 | 14 | 6 | 1 | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | . | 2 | 8 | 60 | 140 | 181 | 319 | 416 | 384 | 161 | 124 | 102 | 13 | ||||||
| Small Heath | . | . | . | . | . | . | 4 | 12 | 44 | 79 | 105 | 86 | 13 | 17 | 6 | 6 | 3 | 18 | 20 | 2 | ||||||