
| 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 | 166 | . | . | . | . | . | . | . | 4 | 1 | 20 | 56 | 60 | 10 | 13 | 3 | . | . | . | . | . | ||||||
| Large Skipper | 85 | . | . | . | . | . | 7 | 21 | . | 33 | 6 | 1 | . | 3 | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 3 | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 39 | 3 | 12 | 5 | 1 | 1 | 1 | . | . | . | . | . | 3 | . | . | 2 | 1 | . | . | . | . | ||||||
| Large White | 9 | . | . | . | . | . | 1 | 2 | . | . | . | 1 | 2 | . | . | 2 | . | . | . | . | . | ||||||
| Small White | 15 | . | . | 1 | 1 | . | . | 4 | . | . | 1 | 2 | 3 | . | . | . | . | . | . | . | . | ||||||
| Green-veined White | 8 | . | . | 2 | . | . | . | . | . | . | . | 3 | 1 | . | . | 2 | . | . | . | . | . | ||||||
| Orange Tip | 3 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Brown Argus | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Common Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| White Admiral | 2 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Emperor | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | 2 | . | . | ||||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | ||||||
| Peacock | 27 | 1 | 1 | 3 | 1 | . | . | 1 | . | . | . | 2 | 11 | 2 | . | 1 | . | . | . | 1 | . | ||||||
| Small Pearl-bordered Fritillary | 4 | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 13 | . | . | 2 | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 15 | . | . | . | . | . | . | . | . | 3 | 6 | 3 | 3 | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 34 | . | . | 2 | . | 1 | 2 | 1 | . | . | . | . | 2 | 2 | 1 | 3 | 7 | 10 | 1 | 1 | . | ||||||
| Marbled White | 265 | . | . | . | . | . | . | . | 33 | 83 | 86 | 37 | 6 | 3 | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 284 | . | . | . | . | . | . | . | . | 2 | 39 | 66 | 77 | 71 | 18 | 9 | 1 | 1 | . | . | . | ||||||
| Meadow Brown | 198 | . | . | . | . | . | 1 | 26 | 12 | 39 | 37 | 30 | 15 | 3 | 9 | 3 | 3 | 1 | . | . | . | ||||||
| Ringlet | 336 | . | . | . | . | . | . | . | 55 | 106 | 123 | 19 | 5 | . | . | . | . | . | . | . | . | ||||||