
| 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 | 61 | . | . | . | . | . | . | . | . | . | 2 | 8 | 18 | 4 | . | . | . | . | |||||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Dingy Skipper | 33 | . | . | . | 3 | 5 | . | 3 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Large White | 7 | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Green-veined White | 13 | . | . | 1 | . | . | . | . | . | . | 1 | 1 | 3 | . | . | . | . | . | |||||||||
| Green Hairstreak | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Blue | 2 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | 6 | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 1 | 1 | . | . | |||||||||
| Common Blue | 33 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | 1 | 7 | . | 2 | . | |||||||||
| Chalk-hill Blue | 86 | . | . | . | . | . | . | . | . | . | . | 1 | 13 | 19 | 9 | 3 | 1 | . | |||||||||
| Adonis Blue | 99 | . | . | . | . | 3 | 11 | 5 | 9 | . | . | . | . | . | 3 | 24 | 10 | . | |||||||||
| Small Tortoiseshell | 91 | . | 1 | 1 | . | . | 1 | . | . | . | 2 | 2 | 1 | . | 3 | 11 | 37 | . | |||||||||
| Peacock | 3 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||||||
| Speckled Wood | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Wall Brown | 43 | . | . | 1 | 2 | 2 | . | . | . | . | . | . | . | 6 | 5 | 1 | . | . | |||||||||
| Marbled White | 71 | . | . | . | . | . | . | . | . | 3 | 18 | 9 | 15 | 1 | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 58 | . | . | . | . | . | . | . | . | . | 5 | 6 | 12 | 10 | 4 | . | . | . | |||||||||
| Meadow Brown | 242 | . | . | . | . | . | . | . | 1 | 10 | 23 | 42 | 28 | 36 | 5 | 1 | 1 | . | |||||||||
| Small Heath | 20 | . | . | . | . | . | . | 3 | . | 1 | . | . | . | . | . | 1 | 2 | . | |||||||||
| Ringlet | 27 | . | . | . | . | . | . | . | . | . | 15 | . | 1 | . | . | . | . | . | |||||||||
| Six-spot Burnet | NI | . | . | . | . | . | . | . | . | . | 1 | 17 | 32 | 7 | . | . | . | . | |||||||||
| Common Heath | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | 1 | . | . | |||||||||
| Mother Shipton | NI | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||||||
| Burnet Companion | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||