
| 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 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | |||
| Large Skipper | 5 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 2 | . | . | . | 1 | . | . | . | . | |||
| Dingy Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||
| Grizzled Skipper | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | 141 | 16 | 10 | 11 | 9 | 9 | 3 | 6 | 9 | 6 | 4 | 1 | 1 | . | . | 7 | 3 | 8 | 14 | 9 | 3 | 1 | 1 | 3 | |||
| Large White | 49 | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | . | 4 | 1 | 2 | 5 | 4 | 2 | 9 | 2 | 6 | |||
| Small White | 33 | . | . | . | . | 3 | . | . | 2 | 1 | . | . | . | . | 2 | 5 | 3 | 3 | 1 | 1 | . | 6 | . | 1 | |||
| Green-veined White | 24 | . | . | . | . | 2 | 3 | 1 | 3 | 1 | . | . | . | . | . | 2 | 1 | 1 | 3 | 3 | . | 2 | . | . | |||
| Orange Tip | 12 | . | . | 1 | 1 | . | 5 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||
| Small Copper | 15 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 2 | 8 | 2 | . | . | . | . | . | . | . | |||
| Brown Argus | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||
| Common Blue | 11 | . | . | . | . | . | . | 3 | . | 1 | . | 2 | . | . | . | . | . | 3 | . | . | 1 | . | . | . | |||
| Holly Blue | 9 | . | . | 2 | 3 | 1 | 1 | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Duke of Burgundy Fritillary | 2 | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| White Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||
| Red Admiral | 45 | . | . | 1 | . | 1 | . | . | . | . | . | . | 1 | 3 | 3 | 2 | 3 | 1 | 1 | 1 | 2 | . | 3 | 9 | |||
| Small Tortoiseshell | 13 | 3 | 1 | 2 | 3 | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | |||
| Peacock | 29 | . | . | 1 | 3 | 2 | 1 | . | 3 | 2 | . | . | . | . | . | . | . | 2 | 4 | 2 | . | . | 1 | 3 | |||
| Comma | 14 | 1 | . | . | . | . | . | . | 3 | . | . | . | . | . | . | 2 | . | 1 | . | . | 2 | . | . | . | |||
| Pearl-bordered Fritillary | 6 | . | . | . | . | . | . | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Dark Green Fritillary | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 2 | 2 | . | . | . | . | . | |||
| Silver-washed Fritillary | 56 | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | 16 | 7 | 10 | 7 | 3 | 4 | 1 | . | . | |||
| Speckled Wood | 187 | 2 | 3 | 3 | 4 | 14 | 9 | 10 | 7 | 12 | 9 | 6 | 4 | 1 | 2 | 1 | 1 | 7 | 14 | 9 | 9 | 13 | 18 | 10 | |||
| Marbled White | 16 | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | 7 | 3 | . | . | . | . | . | . | . | |||
| Gatekeeper / Hedge Brown | 34 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 6 | 10 | 8 | . | . | . | . | . | |||
| Meadow Brown | 165 | . | . | . | . | . | . | . | . | . | . | . | . | 23 | 25 | 20 | 29 | 23 | 15 | 2 | 4 | 1 | 1 | . | |||
| Small Heath | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||
| Ringlet | 139 | . | . | . | . | . | . | . | . | . | . | . | . | 22 | 36 | 35 | 18 | 7 | . | . | . | . | . | . | |||