
| 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 | . | . | . | . | . | . | 1 | . | 6 | . | 2 | 5 | 20 | 10 | 13 | 5 | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | . | . | 22 | 30 | 24 | 50 | 21 | 37 | 25 | 15 | 2 | . | . | . | . | ||||||
| Dingy Skipper | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | . | . | 1 | 1 | . | 1 | . | 3 | 7 | . | . | . | . | . | 1 | 19 | . | 13 | . | 19 | ||||||
| Large White | . | . | 1 | 3 | . | . | 1 | . | . | . | . | . | 1 | 7 | 6 | 2 | . | . | . | . | ||||||
| Small White | . | . | 1 | . | . | 1 | 1 | . | . | . | . | . | . | 3 | 18 | 11 | 1 | 2 | . | 3 | ||||||
| Green-veined White | . | . | . | . | . | 4 | . | . | 1 | . | . | . | . | 2 | 13 | 17 | . | . | 1 | . | ||||||
| Green Hairstreak | . | . | . | 1 | 6 | 32 | 7 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | . | . | 3 | 2 | . | 1 | . | . | . | . | . | . | . | 4 | . | 2 | . | 4 | ||||||
| Common Blue | . | . | . | . | 94 | 96 | 66 | 56 | 42 | . | 1 | 2 | . | 3 | 21 | 67 | 26 | 4 | . | 1 | ||||||
| Holly Blue | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 3 | ||||||
| Small Tortoiseshell | 1 | 3 | . | . | 1 | . | . | . | . | 1 | . | . | . | 1 | . | 1 | . | . | . | 1 | ||||||
| Peacock | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 4 | 50 | . | 3 | . | 1 | ||||||
| Speckled Wood | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | . | 2 | . | . | ||||||
| Wall Brown | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 3 | 8 | 59 | 147 | 54 | 2 | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | . | 2 | 5 | 4 | 2 | 5 | 1 | . | . | . | . | ||||||
| Small Heath | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large Heath | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Unknown White | . | . | . | . | . | . | . | . | . | . | . | . | . | 11 | 4 | 6 | . | 1 | . | . | ||||||