
| 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 | 69 | . | . | . | . | . | . | . | . | . | . | . | 8 | 17 | 3 | 1 | . | . | . | . | . | ||||||
| Large Skipper | 3 | . | . | . | . | . | . | . | 1 | . | . | 10 | . | 2 | . | . | . | . | . | . | . | ||||||
| Brimstone | 3 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large White | 29 | . | . | . | 1 | 1 | . | 1 | 1 | . | . | . | 2 | 8 | 1 | . | 2 | . | . | . | . | ||||||
| Small White | 4 | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | 3 | . | . | . | ||||||
| Green-veined White | 51 | 1 | 2 | 2 | 3 | 1 | 10 | 3 | 1 | . | . | . | 6 | 12 | . | 2 | 3 | 1 | 2 | . | . | ||||||
| Orange Tip | 7 | . | 3 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 6 | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | ||||||
| Brown Argus | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | ||||||
| Common Blue | 27 | . | . | 2 | . | 1 | 6 | 3 | . | . | . | . | . | . | 3 | 2 | 3 | 2 | 1 | . | . | ||||||
| Holly Blue | 11 | . | 2 | 1 | 1 | . | 1 | . | . | . | . | . | 2 | 3 | . | 1 | 1 | . | . | . | . | ||||||
| Red Admiral | 7 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | 3 | ||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | ||||||
| Small Tortoiseshell | 36 | . | 2 | . | . | . | . | . | 3 | 4 | 2 | 1 | 3 | 15 | . | 1 | 1 | . | 2 | . | 1 | ||||||
| Peacock | 13 | 4 | 3 | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | ||||||
| Comma | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | ||||||
| Small Pearl-bordered Fritillary | 41 | . | . | . | . | 6 | 10 | 16 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 12 | . | . | 5 | 2 | 9 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| High Brown Fritillary | 14 | . | . | . | . | . | . | . | . | 3 | 2 | 4 | 2 | 2 | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 68 | . | 1 | 2 | 4 | . | 4 | . | 5 | . | 6 | 4 | 1 | 1 | 9 | . | 4 | 4 | . | 5 | . | ||||||
| Wall Brown | 4 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | ||||||
| Marbled White | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 274 | . | . | . | . | . | . | . | . | . | . | . | . | 9 | 54 | 18 | 9 | 1 | . | . | . | ||||||
| Meadow Brown | 181 | . | . | . | . | . | . | . | 3 | 6 | 7 | 42 | 47 | 42 | 1 | 3 | 1 | . | . | . | . | ||||||
| Small Heath | 69 | . | . | . | 2 | 2 | 3 | 4 | 7 | 3 | . | 2 | 1 | 3 | 4 | 6 | 8 | 7 | 4 | 2 | . | ||||||
| Ringlet | 13 | . | . | . | . | . | . | . | . | . | . | . | 2 | 7 | . | . | . | . | . | . | . | ||||||