
| 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 | ||||||||||||||||||||||||||
| Large Skipper | . | . | . | . | . | . | . | 1 | 1 | . | 1 | . | . | . | . | . | . | |||||||||
| Brimstone | 10 | 3 | 6 | 8 | 1 | 2 | 1 | . | . | . | . | 2 | 2 | 2 | 1 | . | . | |||||||||
| Small White | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green-veined White | . | . | 1 | 3 | 4 | 1 | 3 | . | . | . | 1 | 4 | 6 | 2 | 2 | . | . | |||||||||
| Orange Tip | . | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Holly Blue | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | |||||||||
| White Admiral | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | |||||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | |||||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Peacock | 12 | 9 | 7 | 4 | . | . | . | . | . | . | . | . | 3 | 3 | 1 | 1 | . | |||||||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Pearl-bordered Fritillary | . | . | . | . | 9 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | 1 | 6 | 6 | 6 | 6 | 11 | 4 | . | |||||||||
| Speckled Wood | . | . | 2 | 2 | 3 | 3 | 5 | 3 | 4 | 1 | 1 | 2 | 1 | 6 | 4 | 13 | 7 | |||||||||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | |||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | 3 | 3 | 67 | 63 | 57 | 12 | . | |||||||||
| Meadow Brown | . | . | . | . | . | . | . | 1 | 3 | 3 | 17 | 14 | 5 | 4 | 1 | 1 | . | |||||||||
| Small Heath | . | . | . | . | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Ringlet | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | |||||||||