
| 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 | . | . | . | . | . | . | . | . | . | . | . | 5 | 10 | 11 | 1 | 1 | . | . | . | . | . | |||||
| Large Skipper | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 5 | 5 | 1 | . | . | 3 | . | 1 | . | . | . | . | . | . | 2 | 1 | 2 | . | . | . | . | |||||
| Large White | . | . | . | . | . | . | . | . | 1 | . | . | 2 | 2 | 3 | 1 | 1 | 1 | . | . | . | . | |||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | 1 | 25 | 75 | 89 | 44 | 32 | 28 | 26 | 11 | 2 | |||||
| Green-veined White | . | . | . | 4 | . | 1 | 1 | . | . | . | . | 5 | 3 | 6 | 6 | 4 | 3 | 7 | 4 | 1 | 1 | |||||
| Orange Tip | . | . | 3 | 2 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 3 | . | 1 | . | 2 | . | . | |||||
| Brown Argus | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | 2 | 1 | 1 | 3 | . | . | |||||
| Common Blue | . | . | . | . | . | . | . | 4 | 2 | 1 | . | . | 4 | 13 | 20 | 12 | 19 | 11 | 1 | . | . | |||||
| Holly Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | . | . | . | |||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | |||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Small Tortoiseshell | . | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 3 | 8 | 4 | 6 | 1 | |||||
| Peacock | 1 | 3 | . | . | 1 | 1 | . | . | . | . | . | . | 1 | 20 | 8 | 14 | 13 | 3 | . | . | 1 | |||||
| Speckled Wood | . | . | 2 | 2 | . | . | . | . | 1 | . | 4 | 1 | 2 | 1 | . | 2 | 2 | 7 | 2 | 3 | 1 | |||||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 1 | 1 | . | . | . | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | 8 | 28 | 55 | 4 | . | . | . | . | . | . | . | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | 2 | 27 | 62 | 44 | 12 | 1 | . | . | . | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | 4 | 48 | 88 | 283 | 172 | 95 | 74 | 32 | 12 | 8 | 2 | . | . | |||||
| Small Heath | . | . | . | . | . | 1 | 3 | 2 | . | 2 | . | 7 | 2 | . | . | 6 | 10 | 9 | 4 | 1 | 1 | |||||
| Ringlet | . | . | . | . | . | . | . | . | . | 9 | 34 | 41 | 7 | . | 3 | . | . | . | . | . | . | |||||