
| 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 | . | . | . | . | . | . | 54 | 44 | 46 | 48 | 9 | 24 | 14 | . | . | . | . | |||||||||
| Large Skipper | . | . | . | 14 | 35 | 33 | 17 | 15 | 4 | 2 | 1 | 1 | . | . | . | . | . | |||||||||
| Dingy Skipper | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Wood White | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 2 | . | . | . | . | . | . | . | . | . | . | 11 | 5 | 6 | . | . | 2 | |||||||||
| Large White | . | 1 | 1 | . | . | . | . | 7 | 11 | 7 | 6 | 5 | 6 | 8 | . | . | 1 | |||||||||
| Small White | . | 1 | . | . | . | . | . | 1 | . | 1 | 21 | 6 | 1 | . | . | 2 | 4 | |||||||||
| Green-veined White | . | 5 | 1 | . | . | . | . | 5 | 9 | 8 | 7 | 9 | 8 | 11 | . | 2 | . | |||||||||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | |||||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Common Blue | . | 2 | 1 | 4 | 9 | 2 | 1 | . | 2 | 5 | 22 | 29 | 18 | 7 | . | 1 | . | |||||||||
| White Admiral | . | . | . | . | . | . | 11 | 1 | 1 | 2 | . | . | . | . | . | . | . | |||||||||
| Red Admiral | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | 1 | . | 1 | 1 | |||||||||
| Small Tortoiseshell | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 2 | 3 | |||||||||
| Peacock | 7 | . | . | . | . | . | . | . | . | 6 | 4 | 3 | 2 | . | 1 | . | 1 | |||||||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | |||||||||
| Pearl-bordered Fritillary | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | . | 4 | 1 | 1 | 5 | 7 | 1 | 2 | 1 | 3 | 5 | 13 | 8 | 12 | 12 | 25 | 13 | |||||||||
| Marbled White | . | . | . | . | . | . | 19 | 32 | 15 | 2 | 1 | . | . | . | . | . | . | |||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | 1 | 15 | 3 | 23 | 12 | 21 | 5 | 1 | . | . | . | |||||||||
| Meadow Brown | . | . | . | 4 | 13 | 24 | 68 | 64 | 40 | 25 | 13 | 4 | 1 | . | . | . | . | |||||||||
| Small Heath | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Ringlet | . | . | . | . | 1 | 21 | 124 | 124 | 81 | 24 | 12 | 3 | 1 | . | . | . | . | |||||||||