
| 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 | NI | . | . | . | . | . | . | . | . | . | 3 | 6 | 3 | . | . | . | . | . | . | . | . | . | |||||
| Large Skipper | 19 | . | . | . | . | . | . | . | . | 1 | 4 | 7 | 4 | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 6 | . | . | . | 1 | 2 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | |||||
| Brimstone | 11 | 1 | 1 | 1 | 2 | 3 | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Large White | 29 | . | . | . | 1 | 3 | 3 | . | 1 | . | . | 1 | 3 | 3 | 3 | 1 | 2 | . | 2 | . | . | . | |||||
| Small White | 31 | . | 1 | 2 | 1 | . | . | . | . | . | 1 | 2 | 2 | 1 | 1 | 4 | 3 | 3 | . | 4 | 1 | . | |||||
| Green-veined White | 125 | . | 1 | 2 | 3 | 4 | 5 | 1 | . | 1 | 1 | 5 | 4 | 4 | 10 | 6 | 15 | 18 | 14 | 3 | 2 | 1 | |||||
| Orange Tip | 13 | 1 | 2 | 2 | 3 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 20 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | 1 | . | 2 | 6 | 3 | 1 | 2 | |||||
| Common Blue | 18 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 10 | 3 | 1 | 1 | . | . | . | |||||
| Holly Blue | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| White Admiral | 16 | . | . | . | . | . | . | . | . | . | 3 | 3 | 3 | 3 | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 22 | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | 2 | . | 1 | 6 | 2 | 1 | . | . | |||||
| Painted Lady | 7 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | 1 | 1 | . | . | 1 | |||||
| Small Tortoiseshell | 17 | 1 | . | . | . | . | . | . | . | . | . | 3 | . | 1 | 1 | 3 | 3 | . | 1 | 1 | . | . | |||||
| Peacock | 96 | 10 | 8 | 7 | 9 | 11 | 8 | 1 | . | . | . | . | 1 | 3 | 16 | 7 | 2 | . | . | . | 1 | . | |||||
| Comma | 78 | 1 | 2 | 2 | 1 | . | 2 | . | . | . | 6 | 4 | 3 | 1 | . | . | . | 12 | 20 | 6 | 3 | . | |||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 74 | . | . | . | . | . | . | . | . | 1 | 12 | 11 | 10 | 10 | 8 | 5 | . | . | . | . | . | . | |||||
| Speckled Wood | 66 | . | . | . | . | . | . | . | 1 | 2 | 1 | 1 | 1 | . | 2 | 2 | 13 | 8 | 4 | 1 | 4 | 10 | |||||
| Marbled White | 3 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 74 | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 13 | 26 | 4 | 4 | . | . | . | . | . | |||||
| Meadow Brown | 403 | . | . | . | . | . | . | . | . | 4 | 82 | 69 | 56 | 57 | 19 | 13 | 6 | . | . | . | . | . | |||||
| Ringlet | 159 | . | . | . | . | . | . | . | . | 1 | 55 | 47 | 19 | 3 | . | . | . | . | . | . | . | . | |||||