
| 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 | 65 | . | . | . | . | . | . | . | . | . | . | . | 1 | 13 | 10 | 22 | 5 | 4 | 3 | 7 | . | . | . | . | . | ||
| Large Skipper | 23 | . | . | . | . | . | . | . | . | . | 3 | 3 | 8 | 1 | 3 | 2 | . | . | . | . | . | . | . | . | . | ||
| Brimstone | 22 | 13 | . | 1 | 2 | 1 | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Large White | 15 | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | 1 | 4 | . | . | 3 | . | 1 | . | . | . | ||
| Small White | 10 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 2 | . | . | . | 6 | 1 | . | . | . | ||
| Green-veined White | 47 | 1 | . | . | 1 | 4 | 1 | 2 | 2 | 2 | . | . | . | . | 1 | 4 | 5 | 3 | 4 | 2 | 1 | 3 | 3 | . | 1 | ||
| Orange Tip | 6 | . | . | . | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Green Hairstreak | 2 | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Small Copper | 2 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Common Blue | 14 | . | . | . | . | . | . | . | 2 | 3 | . | 4 | 1 | . | . | . | . | . | . | 2 | . | . | . | . | . | ||
| White Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||
| Small Tortoiseshell | 78 | 8 | 3 | . | . | . | . | . | . | . | . | . | 1 | 1 | 2 | . | 1 | . | . | . | 19 | 3 | 1 | . | . | ||
| Peacock | 58 | 11 | 3 | 6 | 8 | 3 | . | 1 | . | 1 | . | . | . | . | . | 2 | 2 | 8 | 5 | 3 | 1 | . | . | 1 | . | ||
| Comma | 44 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 2 | . | 1 | . | 2 | 2 | 7 | 20 | 6 | ||
| Small Pearl-bordered Fritillary | 41 | . | . | . | . | . | . | . | . | . | 10 | 13 | 5 | . | 1 | . | . | . | . | . | . | . | . | . | . | ||
| Pearl-bordered Fritillary | 137 | . | . | . | . | 9 | 21 | 28 | 11 | 29 | 26 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Silver-washed Fritillary | 87 | . | . | . | . | . | . | . | . | . | . | 4 | 3 | 5 | 10 | 32 | 14 | 11 | 5 | 1 | . | . | . | . | . | ||
| Speckled Wood | 114 | . | 2 | 7 | 2 | 5 | . | . | 1 | 1 | 3 | 5 | . | 2 | 5 | 2 | 1 | 19 | 16 | 12 | 6 | 5 | 3 | 2 | . | ||
| Gatekeeper / Hedge Brown | 50 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 7 | 8 | 15 | 4 | 13 | 1 | . | . | . | . | ||
| Meadow Brown | 99 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 5 | 6 | 9 | 16 | 21 | 13 | 18 | . | . | . | . | . | ||
| Ringlet | 207 | . | . | . | . | . | . | . | . | . | . | 16 | 26 | 51 | 56 | 29 | 18 | 3 | . | . | . | . | . | . | . | ||