
| 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 | Ind | ||||||||||||||||||||||||||
| Small Skipper | 252 | . | . | . | . | . | . | . | . | 7 | 26 | 47 | 62 | 70 | 34 | 13 | 2 | . | . | . | . | ||||||
| Large Skipper | 69 | . | . | . | . | . | . | . | 8 | 12 | 22 | 15 | 6 | . | 2 | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 2 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 25 | 3 | 5 | . | 2 | . | . | . | 1 | . | . | . | 1 | 4 | 4 | . | . | . | . | . | . | ||||||
| Large White | 19 | . | . | . | . | . | . | . | 1 | . | 1 | 2 | 2 | 6 | 3 | 2 | 2 | . | . | . | . | ||||||
| Small White | 24 | . | . | . | . | . | . | 1 | . | . | . | . | 2 | 2 | . | 7 | 1 | 3 | 2 | 2 | 2 | ||||||
| Green-veined White | 29 | . | . | . | . | 2 | . | . | . | . | . | 2 | 1 | 4 | 7 | 4 | 4 | 2 | 2 | 1 | . | ||||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | ||||||
| Common Blue | 16 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | 5 | 3 | 2 | 1 | . | . | ||||||
| Holly Blue | 4 | . | . | . | 2 | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 4 | ||||||
| Small Tortoiseshell | 8 | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | 1 | . | 1 | 1 | 1 | ||||||
| Peacock | 31 | 8 | 2 | . | 2 | . | . | . | . | . | . | . | . | 5 | 8 | 1 | . | . | . | . | . | ||||||
| Comma | 29 | 6 | . | . | 1 | . | . | . | . | . | 2 | . | 2 | 3 | 2 | 1 | . | . | . | 6 | 3 | ||||||
| Speckled Wood | 117 | . | 2 | 3 | 8 | 2 | 5 | 3 | 11 | 16 | 4 | . | 1 | 5 | 13 | 6 | 9 | 7 | 5 | 5 | 4 | ||||||
| Marbled White | 68 | . | . | . | . | . | . | . | 1 | 7 | 25 | 17 | 13 | 3 | 1 | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 310 | . | . | . | . | . | . | . | . | . | 7 | 27 | 52 | 104 | 99 | 19 | 2 | . | . | . | . | ||||||
| Meadow Brown | 460 | . | . | . | . | . | . | . | 13 | 40 | 102 | 66 | 53 | 70 | 101 | 8 | . | . | . | . | . | ||||||
| Small Heath | 12 | . | . | . | . | 1 | 3 | 3 | . | 1 | . | 1 | 1 | . | . | . | . | . | . | . | . | ||||||
| Ringlet | 254 | . | . | . | . | . | . | . | . | 15 | 121 | 69 | 27 | 13 | 7 | 1 | 1 | . | . | . | . | ||||||