
| 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 | 8 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 4 | . | 2 | . | . | . | . | . | . | . | . | ||
| Large Skipper | 3 | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Grizzled Skipper | 3 | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Brimstone | 118 | 10 | 5 | 9 | 6 | 8 | 5 | 3 | 5 | 6 | 1 | . | 5 | . | . | 2 | 10 | 10 | 5 | 9 | 6 | 3 | . | 1 | . | ||
| Large White | 44 | . | . | . | . | . | . | . | . | . | . | . | 6 | 3 | 3 | . | 7 | 7 | 3 | 1 | 1 | 1 | . | 2 | 3 | ||
| Small White | 18 | . | . | . | . | . | . | 1 | 1 | 2 | . | . | . | 2 | 2 | . | 6 | 2 | 1 | . | . | 1 | . | . | . | ||
| Green-veined White | 6 | . | . | 1 | 1 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Orange Tip | 9 | . | . | 4 | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Small Copper | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 3 | . | . | . | . | . | . | . | ||
| Common Blue | 6 | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | 1 | . | . | . | 1 | . | . | . | . | . | . | . | ||
| Holly Blue | 6 | . | . | 1 | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| White Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||
| Red Admiral | 58 | 1 | 1 | 1 | 1 | . | 2 | . | . | . | 1 | 5 | 3 | . | 7 | 2 | 5 | 8 | . | 4 | 2 | 3 | 2 | 3 | 2 | ||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | ||
| Small Tortoiseshell | 5 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | ||
| Peacock | 38 | 1 | 2 | 1 | 2 | 1 | . | 1 | 1 | 2 | . | 1 | . | 1 | . | . | 7 | 9 | 3 | . | 4 | 1 | . | . | . | ||
| Comma | 7 | 1 | 2 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | ||
| Small Pearl-bordered Fritillary | 3 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Pearl-bordered Fritillary | 4 | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | . | . | . | . | . | ||
| Silver-washed Fritillary | 51 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 7 | . | 8 | 11 | 12 | 2 | . | . | . | . | . | ||
| Speckled Wood | 157 | 1 | 5 | 12 | 9 | 14 | 7 | 4 | 8 | 6 | 6 | 3 | 3 | 1 | 2 | 2 | 6 | 12 | 11 | 8 | 5 | 4 | 6 | 5 | 5 | ||
| Marbled White | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | . | . | . | . | ||
| Gatekeeper / Hedge Brown | 20 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 3 | 7 | 3 | . | 1 | . | . | . | . | ||
| Meadow Brown | 70 | . | . | . | . | . | . | . | . | . | . | 3 | 10 | 9 | 13 | 1 | 10 | 8 | 4 | 1 | . | . | . | . | . | ||
| Ringlet | 109 | . | . | . | . | . | . | . | . | . | . | . | . | 37 | 28 | 25 | 14 | 6 | 2 | . | . | . | . | . | . | ||