
| 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 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Small Skipper | 19 | . | . | . | . | . | . | . | . | . | . | . | 3 | 8 | 2 | . | 8 | . | . | . | |||||||
| Large Skipper | 24 | . | . | . | . | . | . | 5 | 2 | 5 | 4 | 4 | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 11 | . | . | . | 2 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 33 | . | 2 | 5 | 4 | 3 | 1 | 1 | 1 | . | . | . | . | . | . | . | 1 | 2 | . | 3 | |||||||
| Large White | 17 | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 7 | . | 3 | 1 | 1 | . | |||||||
| Small White | 20 | . | . | . | . | 2 | 2 | 2 | . | . | . | . | . | 2 | . | 1 | 8 | 1 | . | . | |||||||
| Green-veined White | 5 | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Orange Tip | 10 | . | . | 2 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Blue | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 4 | |||||||
| Brown Argus | NI | . | . | . | 2 | 10 | 2 | 1 | 3 | 4 | 1 | . | . | . | . | . | 2 | 1 | 1 | 3 | |||||||
| Common Blue | NI | . | . | . | . | . | 3 | 9 | 2 | 2 | 2 | . | . | . | . | . | . | . | 3 | 6 | |||||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | |||||||
| Adonis Blue | NI | . | . | . | . | 14 | 19 | 14 | 10 | 7 | . | . | . | . | . | . | . | . | 1 | 6 | |||||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Painted Lady | 3 | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 15 | 1 | 1 | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | 1 | 1 | . | . | . | 2 | |||||||
| Peacock | 11 | . | 1 | 3 | 4 | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | |||||||
| Speckled Wood | 14 | . | 1 | . | 3 | . | 1 | 1 | 1 | . | . | . | . | . | . | . | 2 | . | 1 | 1 | |||||||
| Wall Brown | 15 | . | . | . | 3 | 5 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | |||||||
| Marbled White | 115 | . | . | . | . | . | . | . | . | . | 16 | 26 | 10 | 19 | 14 | . | 3 | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 70 | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 13 | 3 | 16 | 5 | 5 | 7 | |||||||
| Meadow Brown | 295 | . | . | . | . | . | . | . | 1 | 2 | 11 | 19 | 9 | 60 | 47 | 13 | 40 | 12 | 7 | 18 | |||||||
| Small Heath | 42 | . | . | . | . | 2 | 2 | 9 | 5 | 6 | 6 | 4 | . | . | . | . | . | . | . | . | |||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||
| The Cinnabar | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 7 | 1 | . | . | |||||||