
| 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 | 76 | . | . | . | . | . | . | . | . | . | . | 16 | 24 | 12 | 3 | . | . | . | . | ||||||||
| Large Skipper | 5 | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | ||||||||
| Dingy Skipper | 40 | . | . | . | . | . | . | 15 | 6 | 4 | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | 17 | . | . | . | . | . | 1 | 4 | 4 | 1 | 1 | . | . | . | . | . | . | . | . | ||||||||
| Wood White | 3 | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | ||||||||
| Brimstone | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Large White | 10 | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 2 | 2 | . | 1 | . | . | 1 | ||||||||
| Small White | 5 | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | 1 | . | ||||||||
| Green-veined White | 7 | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | 1 | . | 1 | . | . | . | . | ||||||||
| Orange Tip | 3 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Purple Hairstreak | 5 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | 1 | . | . | . | . | ||||||||
| Small Copper | 6 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | 2 | 2 | ||||||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | ||||||||
| Common Blue | 43 | . | . | . | . | . | . | . | 3 | 4 | 11 | . | . | 1 | 1 | 1 | 5 | 2 | 3 | ||||||||
| Duke of Burgundy Fritillary | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Tortoiseshell | 14 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 4 | 6 | 2 | ||||||||
| Peacock | 16 | . | 1 | . | 1 | 1 | 2 | . | . | . | . | . | 3 | 3 | 3 | . | . | 1 | 1 | ||||||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||||
| Small Pearl-bordered Fritillary | 4 | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | ||||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | ||||||||
| Silver-washed Fritillary | 7 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 2 | 1 | 2 | . | . | . | ||||||||
| Marsh Fritillary | 9 | . | . | . | . | . | . | . | 5 | 1 | 1 | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 30 | . | . | . | . | . | 1 | 2 | 2 | 1 | 1 | . | . | 2 | 4 | 4 | 5 | 4 | 3 | ||||||||
| Wall Brown | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||||||
| Marbled White | 162 | . | . | . | . | . | . | . | . | . | . | 40 | 52 | 15 | 9 | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 429 | . | . | . | . | . | . | . | . | . | . | 38 | 143 | 92 | 52 | 9 | 1 | 2 | 2 | ||||||||
| Meadow Brown | 266 | . | . | . | . | . | . | . | . | . | 3 | 49 | 56 | 29 | 37 | 33 | 10 | . | . | ||||||||
| Small Heath | 21 | . | . | . | . | . | . | 1 | 4 | 2 | 5 | 1 | 1 | 1 | . | . | . | . | . | ||||||||
| Ringlet | 51 | . | . | . | . | . | . | . | . | . | . | 27 | 13 | 2 | . | . | . | . | . | ||||||||