
| 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 | 81 | . | . | . | . | . | . | . | 2 | 4 | 4 | . | 17 | 6 | 5 | . | . | . | . | ||||||||
| Small Skipper | 70 | . | . | . | . | . | . | . | . | . | 12 | 34 | . | 2 | 4 | . | . | . | . | ||||||||
| Essex Skipper | 11 | . | . | . | . | . | . | . | . | . | 5 | 4 | . | . | . | . | . | . | . | ||||||||
| Silver-spotted Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 4 | . | . | ||||||||
| Large Skipper | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Dingy Skipper | NI | . | . | . | 13 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | NI | . | 3 | . | 5 | . | . | . | 5 | 1 | . | 2 | 4 | 8 | . | 5 | . | . | . | ||||||||
| Large White | NI | . | . | . | 1 | . | . | 1 | . | . | 3 | . | 4 | 1 | . | 2 | . | 1 | . | ||||||||
| Small White | NI | . | . | 2 | 7 | . | . | 2 | . | . | . | . | 1 | 4 | . | 9 | 5 | 2 | 2 | ||||||||
| Green-veined White | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | NI | . | . | . | . | . | 1 | . | 1 | . | 1 | 1 | . | . | . | . | . | 3 | . | ||||||||
| Common Blue | NI | . | . | . | . | 2 | 12 | 10 | 9 | 1 | . | . | 12 | 8 | 11 | 65 | 2 | 4 | 4 | ||||||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | 23 | 272 | 782 | 812 | 138 | 115 | 1 | . | . | ||||||||
| Adonis Blue | NI | . | . | . | . | 5 | 39 | 7 | 2 | . | . | . | . | . | 2 | 25 | 3 | 1 | . | ||||||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | 1 | . | . | 5 | 2 | 1 | 16 | 4 | . | 2 | ||||||||
| Small Tortoiseshell | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||||
| Peacock | NI | . | 2 | . | . | . | . | . | . | . | . | 1 | 2 | 6 | . | . | . | . | . | ||||||||
| Comma | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | . | ||||||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | 4 | 10 | 8 | 6 | 5 | 1 | . | 1 | . | . | . | ||||||||
| Speckled Wood | NI | . | . | 2 | 1 | . | 1 | . | 3 | 5 | 1 | 4 | 3 | 2 | 1 | 6 | 3 | 7 | 1 | ||||||||
| Wall Brown | NI | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Marbled White | 219 | . | . | . | . | . | . | . | . | 84 | 44 | 65 | 1 | . | . | . | . | . | . | ||||||||
| Grayling | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | 7 | 62 | 8 | 19 | 5 | 11 | . | . | . | ||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | 3 | 29 | 33 | 275 | 450 | 434 | 180 | 177 | 120 | 56 | 21 | ||||||||
| Small Heath | NI | . | . | . | 1 | . | 6 | 3 | 10 | 18 | 14 | 11 | 5 | 2 | 1 | 4 | 4 | . | . | ||||||||
| Six-spot Burnet | NI | . | . | . | . | . | . | . | . | . | 3 | 5 | 2 | 4 | . | . | . | . | . | ||||||||
| Speckled Yellow | NI | . | . | . | . | . | 1 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Clouded Buff | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Silver Y | NI | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| The Cinnabar | NI | . | . | 1 | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||