
| 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 | 33 | . | . | . | . | . | . | . | . | . | 8 | 11 | 4 | 10 | . | . | . | . | . | . | . | ||||||
| Essex Skipper | 14 | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 9 | . | 1 | . | . | . | . | . | ||||||
| Large Skipper | 12 | . | . | . | . | . | . | . | 4 | 5 | 3 | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 16 | . | 5 | 1 | . | . | . | 2 | . | 1 | 1 | 1 | . | 1 | 1 | 2 | . | 1 | . | . | . | ||||||
| Large White | 24 | . | . | . | . | . | . | 1 | . | . | 3 | 6 | 1 | 7 | 3 | 2 | 1 | . | . | . | . | ||||||
| Small White | 112 | . | . | 4 | . | . | . | . | . | 2 | 5 | 19 | 13 | 25 | 16 | 10 | 6 | 5 | 2 | 2 | 3 | ||||||
| Green-veined White | 87 | 1 | 1 | 8 | . | 3 | 1 | 1 | . | . | 1 | 8 | 10 | 10 | 18 | 10 | 8 | 2 | 2 | . | 1 | ||||||
| Orange Tip | 45 | 1 | 6 | 14 | 11 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| White-letter Hairstreak | 3 | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Common Blue | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 3 | . | . | . | . | ||||||
| Holly Blue | 3 | . | 1 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 20 | . | . | . | . | . | . | . | 4 | 2 | 1 | 1 | 1 | 2 | 3 | 1 | . | 1 | 2 | . | 2 | ||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 28 | 1 | . | . | . | . | . | . | . | . | 3 | 16 | 4 | 1 | . | . | . | . | 1 | . | . | ||||||
| Peacock | 43 | 2 | 9 | 7 | 1 | . | . | 2 | . | . | 1 | 1 | 2 | 9 | 3 | 3 | . | . | . | . | . | ||||||
| Comma | 26 | . | . | . | . | . | . | . | 1 | . | 3 | 5 | 5 | 3 | 2 | 2 | 1 | 1 | . | . | 3 | ||||||
| Speckled Wood | 16 | 2 | 1 | . | . | . | . | 1 | 1 | . | . | . | 1 | . | 1 | 1 | 3 | 4 | 1 | . | . | ||||||
| Marbled White | 33 | . | . | . | . | . | . | . | . | 13 | 6 | 11 | 3 | . | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 182 | . | . | . | . | . | . | . | . | . | 18 | 57 | 43 | 48 | 11 | 5 | . | . | . | . | . | ||||||
| Meadow Brown | 218 | . | . | . | . | . | . | 1 | 11 | 53 | 31 | 48 | 13 | 45 | 8 | 8 | . | . | . | . | . | ||||||
| Ringlet | 108 | . | . | . | . | . | . | . | . | 37 | 52 | 14 | 4 | 1 | . | . | . | . | . | . | . | ||||||