
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 3 | 1 | 3 | 2 | 3 | 1 | . | . | ||||
| Silver-spotted Skipper | 11 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 7 | 2 | . | . | ||||
| Large Skipper | 5 | . | . | . | . | . | . | . | . | . | 1 | . | 2 | 2 | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 15 | . | . | 1 | 6 | 2 | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 12 | . | . | 1 | 1 | . | 1 | . | . | . | . | 1 | . | . | . | . | 1 | 2 | 1 | 1 | . | . | . | ||||
| Large White | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | . | . | 1 | . | ||||
| Small White | 5 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | 2 | . | . | . | . | ||||
| Green-veined White | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||
| Orange Tip | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 3 | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||
| Common Blue | 54 | . | . | . | . | . | 6 | . | 11 | 6 | 3 | . | . | . | . | . | . | . | 4 | 10 | 11 | . | 1 | ||||
| Chalk-hill Blue | 22 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 5 | . | . | . | 13 | . | ||||
| Red Admiral | 4 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | 1 | . | . | . | . | . | . | . | ||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | 1 | . | . | ||||
| Peacock | 10 | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 1 | . | . | . | . | . | ||||
| Speckled Wood | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||
| Marbled White | 11 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 5 | 1 | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 46 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 3 | 9 | 7 | 7 | 3 | 4 | . | 3 | . | ||||
| Meadow Brown | 185 | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 15 | 14 | 13 | 19 | 27 | 11 | 35 | 13 | 18 | . | ||||
| Small Heath | 35 | . | . | . | . | . | 1 | . | 3 | 3 | 2 | 3 | . | 2 | . | 10 | . | . | . | . | 4 | . | 1 | ||||
| Ringlet | 12 | . | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 2 | 1 | . | . | . | . | . | . | . | ||||
| Five-spot Burnet | NI | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||