
| 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 | 57 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 24 | 16 | 11 | 2 | . | . | . | . | . | ||||
| Large Skipper | 61 | . | . | . | . | . | . | . | . | . | 20 | 8 | 3 | 11 | 6 | 1 | . | 8 | . | . | . | . | . | ||||
| Grizzled Skipper | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||
| Brimstone | 27 | 1 | 2 | 3 | 1 | 7 | . | . | 2 | . | 1 | . | . | . | . | . | . | . | 1 | . | 1 | 3 | . | ||||
| Large White | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 1 | . | . | . | . | . | ||||
| Small White | 31 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 15 | 3 | 1 | . | . | . | ||||
| Green-veined White | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||
| Orange Tip | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Common Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Duke of Burgundy Fritillary | 5 | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| White Admiral | 4 | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Emperor | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | . | . | . | ||||
| Painted Lady | 5 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 2 | . | . | . | . | ||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Peacock | 27 | . | . | 2 | 5 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | 3 | 4 | 2 | 1 | . | . | ||||
| Comma | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | ||||
| Small Pearl-bordered Fritillary | 19 | . | . | . | . | . | . | 7 | 2 | 5 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 17 | . | . | . | . | . | 5 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | 8 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 1 | 1 | . | . | . | . | . | . | ||||
| Marsh Fritillary | 11 | . | . | . | . | . | . | 3 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 37 | . | . | . | . | 2 | . | 1 | 1 | 3 | . | . | 1 | . | . | . | 3 | 5 | 2 | 9 | 2 | 2 | . | ||||
| Marbled White | 155 | . | . | . | . | . | . | . | . | . | . | 2 | 48 | 39 | 46 | 16 | 4 | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 113 | . | . | . | . | . | . | . | . | . | . | . | . | 13 | 18 | 20 | 24 | 31 | 3 | . | . | . | . | ||||
| Meadow Brown | 90 | . | . | . | . | . | . | . | . | . | . | 1 | 21 | 8 | 11 | 22 | 10 | 6 | 2 | 5 | . | . | . | ||||
| Small Heath | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||
| Ringlet | 232 | . | . | . | . | . | . | . | . | . | . | 18 | 65 | 90 | 41 | 12 | 1 | 3 | . | . | . | . | . | ||||