
| 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 | 31 | . | . | . | . | . | . | . | . | . | . | 2 | 10 | 6 | . | . | . | . | . | ||||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| Large Skipper | 35 | . | . | . | . | . | . | . | . | 12 | 9 | 3 | . | . | . | . | . | . | . | ||||||||
| Dingy Skipper | 3 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Large White | 10 | . | . | . | 1 | . | 1 | . | . | . | . | . | 1 | . | . | . | 4 | 1 | . | ||||||||
| Small White | 13 | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | 2 | 2 | 1 | 1 | 2 | . | ||||||||
| Green-veined White | 11 | . | . | . | 2 | . | 3 | . | . | . | . | . | . | 2 | 4 | . | . | . | . | ||||||||
| Orange Tip | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brown Argus | 10 | . | . | . | . | . | 4 | 1 | 1 | . | . | . | . | 1 | . | . | . | 1 | 1 | ||||||||
| Common Blue | 47 | . | . | . | . | . | 1 | 2 | 1 | 3 | 3 | 3 | . | . | . | 2 | 5 | 10 | 5 | ||||||||
| Chalk-hill Blue | 24 | . | . | . | . | . | . | . | . | . | . | . | 5 | 5 | 5 | 3 | 4 | 2 | 1 | ||||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||||
| Small Tortoiseshell | 147 | . | . | 3 | 3 | . | . | . | . | . | 6 | 11 | 4 | 6 | . | . | 12 | 22 | 17 | ||||||||
| Peacock | 7 | 1 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | ||||||||
| Comma | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Dark Green Fritillary | 7 | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | ||||||||
| Marsh Fritillary | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 18 | . | . | . | . | 1 | 1 | 2 | . | . | . | . | . | 3 | . | . | 1 | . | 2 | ||||||||
| Wall Brown | 7 | . | . | . | . | 1 | 4 | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Marbled White | 47 | . | . | . | . | . | . | . | . | . | 9 | 19 | . | . | 1 | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 8 | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 2 | . | . | . | . | ||||||||
| Meadow Brown | 105 | . | . | . | . | . | . | . | . | 5 | 17 | 18 | 8 | 14 | 6 | 9 | 3 | 1 | . | ||||||||
| Small Heath | 44 | . | . | . | . | . | 1 | 3 | 5 | 5 | 7 | 4 | . | 1 | 1 | . | 3 | 1 | . | ||||||||
| Ringlet | 177 | . | . | . | . | . | . | . | . | 3 | 26 | 71 | 2 | 2 | . | . | . | . | . | ||||||||
| The Forester | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Chimney Sweeper | NI | . | . | . | . | . | . | . | . | . | 1 | 4 | . | . | . | . | . | . | . | ||||||||
| Latticed Heath | NI | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Silver Y | NI | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Mother Shipton | NI | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Burnet Companion | NI | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||