
| 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/Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | 3 | . | 6 | 8 | . | . | . | . | . | . | . | . | ||||
| Silver-spotted Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | ||||
| Large Skipper | 3 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 21 | . | . | . | . | 8 | 7 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 11 | . | . | . | 1 | 7 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||
| Brimstone | 8 | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | 3 | . | 2 | . | 1 | . | . | ||||
| Large White | 33 | . | . | . | . | 1 | . | 2 | . | 1 | . | 2 | 1 | 6 | 4 | 1 | 4 | 4 | 6 | . | 1 | . | . | ||||
| Small White | 16 | 1 | . | . | 1 | 3 | . | . | 1 | . | . | . | . | . | 1 | . | 3 | 1 | 1 | . | . | 1 | . | ||||
| Green-veined White | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | ||||
| Orange Tip | 2 | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 4 | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 3 | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | ||||
| Brown Argus | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | ||||
| Common Blue | 32 | . | . | . | . | . | 2 | 7 | 1 | 4 | . | . | . | . | . | . | 1 | 5 | 3 | 1 | 1 | 2 | 1 | ||||
| Chalk-hill Blue | 84 | . | . | . | . | . | . | . | . | . | . | . | . | . | 10 | . | 23 | 29 | 17 | 3 | . | . | . | ||||
| Adonis Blue | 36 | . | . | . | . | . | 6 | 8 | 3 | . | . | . | . | . | . | . | . | 2 | 9 | . | 1 | . | . | ||||
| Red Admiral | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | 5 | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | ||||
| Peacock | 11 | 2 | . | 2 | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Marbled White | 124 | . | . | . | . | . | . | . | . | . | 23 | 41 | 29 | 17 | 14 | . | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 42 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 23 | 2 | 13 | . | . | . | . | . | . | ||||
| Meadow Brown | 934 | . | . | . | . | . | . | . | . | . | 7 | 9 | 5 | 7 | 11 | 23 | 115 | 185 | 199 | 92 | 88 | 37 | 19 | ||||
| Small Heath | 42 | . | . | . | . | 11 | 2 | 2 | 4 | . | 5 | 7 | 2 | . | 2 | . | . | 1 | 2 | 1 | . | . | . | ||||
| Ringlet | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||