
| 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 | 48 | . | . | . | . | . | . | . | . | . | 8 | 3 | 5 | 19 | . | 3 | . | . | . | . | |||||||
| Large Skipper | NI | . | . | . | . | . | 1 | 3 | 11 | 6 | 17 | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 19 | 1 | 2 | 3 | 3 | 2 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 14 | . | . | 4 | 2 | . | . | 4 | 1 | . | . | . | . | 1 | . | . | . | . | 2 | . | |||||||
| Large White | 19 | . | . | . | 5 | 2 | . | 1 | 1 | . | 2 | . | 1 | 4 | . | . | . | . | . | . | |||||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||
| Green-veined White | 37 | . | 3 | 1 | 2 | . | . | 4 | 3 | . | . | . | 2 | 3 | 1 | 4 | 1 | . | 2 | . | |||||||
| Orange Tip | 9 | . | 1 | 2 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 7 | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | 2 | . | . | |||||||
| Brown Argus | 90 | . | . | . | . | . | 1 | 12 | 2 | 7 | . | . | 2 | 4 | 3 | 8 | 16 | 4 | . | . | |||||||
| Common Blue | 145 | . | . | . | 1 | 2 | 1 | 12 | 12 | 5 | . | . | 5 | 25 | 7 | 14 | 13 | 3 | 3 | . | |||||||
| Holly Blue | 8 | 1 | . | 3 | 2 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | |||||||
| Painted Lady | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 25 | 3 | . | . | . | . | . | . | 1 | . | 1 | 1 | . | . | 9 | 4 | 1 | 3 | . | . | |||||||
| Peacock | 10 | . | . | . | 1 | 2 | . | . | . | . | . | . | 1 | 3 | . | 1 | . | . | . | . | |||||||
| Comma | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | . | 5 | 2 | . | . | . | 2 | 1 | . | . | . | . | . | . | |||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 148 | 4 | 4 | 7 | 6 | 6 | 1 | 4 | 3 | 5 | . | 1 | 6 | 7 | 11 | 8 | 25 | 10 | 10 | 5 | |||||||
| Wall Brown | 10 | . | . | . | . | . | . | 1 | . | . | . | . | 1 | 5 | . | 1 | . | . | . | . | |||||||
| Marbled White | 54 | . | . | . | . | . | . | . | 1 | 1 | 15 | 11 | 6 | 4 | . | . | . | . | . | . | |||||||
| Grayling | 15 | . | . | . | . | . | . | . | . | . | . | . | 3 | 7 | . | 2 | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 180 | . | . | . | . | . | . | . | . | . | . | . | 15 | 55 | 43 | 22 | 13 | 3 | 3 | . | |||||||
| Meadow Brown | 476 | . | . | . | . | . | . | . | 12 | 15 | 37 | 11 | 61 | 77 | 48 | 57 | 20 | 21 | 5 | 1 | |||||||
| Small Heath | 138 | . | . | . | . | 2 | 1 | 2 | 9 | 9 | 29 | 4 | 12 | 12 | 1 | . | 8 | 4 | 2 | . | |||||||
| Ringlet | 141 | . | . | . | . | . | . | . | 6 | 16 | 39 | 16 | 12 | 4 | . | . | . | . | . | . | |||||||