
| 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 | 101 | . | . | . | . | . | . | . | . | . | 2 | 9 | 15 | 24 | 29 | 16 | 7 | 1 | . | . | . | . | |||||
| Large Skipper | 118 | . | . | . | . | . | . | . | 1 | 20 | 27 | 16 | 17 | 17 | 6 | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 30 | . | . | 2 | 6 | . | 5 | 5 | . | . | . | . | 3 | 1 | 1 | . | 4 | 1 | . | . | . | . | |||||
| Large White | 2 | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | |||||
| Small White | 14 | . | . | . | 1 | . | . | . | . | . | . | 2 | 2 | 2 | . | 1 | 2 | 4 | . | . | . | . | |||||
| Green-veined White | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | |||||
| Brown Argus | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Holly Blue | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| White Admiral | 4 | . | . | . | . | . | . | . | . | 1 | . | . | 1 | 1 | . | 1 | . | . | . | . | . | . | |||||
| Peacock | 22 | 4 | 3 | 2 | 4 | . | 2 | 1 | . | . | . | . | 1 | . | . | 1 | . | 2 | . | . | . | . | |||||
| Comma | 9 | 4 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||
| Small Pearl-bordered Fritillary | 26 | . | . | . | . | . | 3 | 4 | 6 | 7 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | 46 | . | . | 3 | 15 | 5 | 7 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 60 | . | . | . | . | . | . | . | . | 2 | 3 | 4 | 10 | 6 | 14 | 12 | 3 | 4 | 1 | . | . | . | |||||
| Marsh Fritillary | 116 | . | . | . | 18 | 26 | 35 | 18 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 21 | . | . | 1 | 2 | 2 | . | . | . | 1 | . | . | . | . | 1 | 2 | . | 1 | . | 2 | 2 | . | |||||
| Marbled White | 111 | . | . | . | . | . | . | . | . | . | 15 | 22 | 26 | 28 | 13 | 2 | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 129 | . | . | . | . | . | . | . | . | . | . | . | 1 | 17 | 31 | 52 | 29 | 4 | 5 | 1 | . | . | |||||
| Meadow Brown | 103 | . | . | . | . | . | . | . | . | 2 | 17 | 20 | 25 | 14 | 9 | 1 | 4 | 2 | 2 | . | . | . | |||||
| Small Heath | 14 | . | . | . | . | . | 3 | 3 | . | 5 | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||
| Ringlet | 298 | . | . | . | . | . | . | . | . | . | 18 | 82 | 81 | 66 | 24 | 6 | 7 | . | . | . | . | . | |||||