
| 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 | 18 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 7 | . | . | . | . | . | . | . | . | |||
| Large Skipper | 11 | . | . | . | . | . | . | . | 2 | . | 1 | . | 2 | . | 4 | 1 | . | . | . | . | 1 | . | . | . | |||
| Brimstone | 16 | 4 | 5 | . | 1 | . | . | . | 1 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Large White | 20 | . | . | . | . | . | 2 | 1 | 1 | 1 | . | . | 1 | . | 2 | 4 | . | 1 | 4 | 2 | . | 2 | . | . | |||
| Small White | 6 | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | |||
| Green-veined White | 53 | . | . | 4 | 1 | 5 | 1 | . | . | . | . | . | 1 | . | 2 | 8 | 6 | 10 | 3 | 2 | . | . | . | . | |||
| Orange Tip | 9 | 2 | 2 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Purple Hairstreak | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | |||
| Small Copper | 55 | . | . | . | . | 4 | . | 3 | 2 | . | 3 | . | . | 1 | . | 5 | 1 | 6 | 2 | 2 | . | 1 | 5 | 15 | |||
| Common Blue | 13 | . | . | . | . | . | . | 2 | 2 | 1 | . | . | . | . | . | 1 | . | 3 | 1 | . | 3 | . | . | . | |||
| Holly Blue | 8 | . | . | . | . | 2 | . | . | . | . | . | . | . | 1 | 1 | . | 3 | . | . | . | . | . | . | . | |||
| White Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||
| Small Tortoiseshell | 39 | 2 | . | 1 | . | . | . | . | . | . | . | 2 | 1 | 1 | 3 | 5 | 1 | 3 | 6 | 2 | 4 | 2 | 2 | . | |||
| Peacock | 39 | 7 | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | 7 | 7 | 2 | 2 | . | . | . | . | 1 | |||
| Comma | 10 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | 1 | 2 | 3 | |||
| Small Pearl-bordered Fritillary | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | 8 | . | . | . | . | 1 | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| High Brown Fritillary | 31 | . | . | . | . | . | . | . | . | . | . | 10 | 5 | 1 | 7 | 1 | . | . | . | . | . | . | . | . | |||
| Silver-washed Fritillary | 10 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 5 | 3 | . | . | . | . | . | . | . | . | |||
| Speckled Wood | 39 | . | 2 | 1 | . | 2 | 1 | . | 1 | 4 | 3 | 1 | . | . | 1 | 2 | 1 | 4 | 2 | 4 | . | 4 | 3 | 1 | |||
| Marbled White | 9 | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 6 | . | . | . | . | . | . | . | . | . | |||
| Grayling | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||
| Gatekeeper / Hedge Brown | 174 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 38 | 28 | 33 | 35 | 3 | . | . | . | . | |||
| Meadow Brown | 63 | . | . | . | . | . | . | . | . | . | . | 3 | 3 | 8 | 1 | 13 | 7 | 7 | 4 | 1 | 2 | 1 | . | . | |||
| Small Heath | 32 | . | . | . | . | 2 | 1 | 4 | 4 | 2 | 2 | 1 | . | 5 | 4 | 2 | . | . | 3 | . | . | . | . | . | |||
| Ringlet | 97 | . | . | . | . | . | . | . | . | . | . | . | 29 | 21 | 22 | 17 | . | . | . | . | . | . | . | . | |||