
| 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 | . | . | . | . | . | . | . | . | . | . | 26 | 56 | 22 | 31 | 1 | . | . | . | . | . | . | |||||
| Large Skipper | . | . | . | . | . | . | . | . | 10 | 12 | 20 | 16 | 3 | 1 | . | . | . | . | . | . | . | |||||
| Dingy Skipper | . | . | . | . | 1 | 1 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Brimstone | 1 | . | 2 | . | 6 | 4 | 1 | . | . | 1 | . | 1 | 1 | . | . | . | . | . | . | . | 1 | |||||
| Large White | . | . | . | . | 13 | 14 | 4 | 4 | 5 | . | . | 1 | 15 | 14 | 2 | 2 | . | 2 | . | . | 1 | |||||
| Small White | . | . | . | . | 2 | 2 | . | 1 | 1 | . | . | 1 | 4 | 5 | 1 | 3 | 2 | 3 | 1 | 1 | . | |||||
| Green-veined White | . | . | . | . | 1 | . | 1 | 3 | 1 | 1 | . | . | . | . | . | 1 | . | . | . | . | . | |||||
| Orange Tip | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | . | . | . | . | 4 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | |||||
| Common Blue | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | 5 | 50 | 17 | 5 | 2 | . | . | . | |||||
| Holly Blue | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 2 | 1 | . | . | 3 | 2 | 2 | . | . | . | 1 | 2 | 1 | 1 | 1 | 1 | . | . | 1 | . | . | |||||
| Peacock | 1 | 5 | 2 | 1 | 3 | . | . | . | . | . | . | . | 14 | 2 | . | . | . | . | . | . | . | |||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | 1 | . | . | . | |||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 1 | 1 | . | . | . | . | . | . | . | |||||
| Speckled Wood | . | . | 3 | 3 | . | 3 | . | 1 | 12 | 7 | 12 | . | 2 | 7 | 3 | 13 | 9 | 8 | 2 | . | . | |||||
| Wall Brown | . | . | . | . | . | 3 | 3 | . | . | . | . | . | . | 3 | 28 | 12 | 2 | 1 | . | . | . | |||||
| Marbled White | . | . | . | . | . | . | . | . | 1 | 9 | 157 | 225 | 56 | 32 | . | . | . | . | . | . | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 3 | . | . | . | . | . | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 37 | 40 | 33 | 23 | 37 | 1 | . | . | . | . | . | . | |||||
| Small Heath | . | . | . | . | . | 1 | 6 | 6 | 3 | 7 | 1 | . | . | . | 11 | 9 | 9 | 3 | . | . | . | |||||
| Ringlet | . | . | . | . | . | . | . | . | 3 | 46 | 130 | 169 | 41 | 50 | . | . | . | . | . | . | . | |||||