
| 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 | . | . | . | . | . | . | . | . | . | . | . | 9 | 19 | 19 | 6 | 4 | . | . | . | . | . | . | ||||
| Large Skipper | 125 | . | . | . | . | . | . | . | 1 | 1 | 1 | 22 | 31 | 25 | 34 | 4 | 6 | . | . | . | . | . | . | ||||
| Grizzled Skipper | 2 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Wood White | 2 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Brimstone | 93 | 8 | 15 | 6 | 9 | . | 3 | 1 | 1 | 1 | . | . | . | 3 | 11 | 4 | 6 | 2 | . | . | . | . | 11 | ||||
| Large White | 20 | . | . | . | . | 1 | . | . | 2 | 3 | . | 1 | . | 2 | 5 | 4 | 2 | . | . | . | . | . | . | ||||
| Small White | 55 | . | . | . | 1 | . | . | . | . | 4 | . | . | . | 5 | 11 | 7 | 8 | 14 | 2 | 1 | . | 1 | 1 | ||||
| Green-veined White | 67 | . | . | . | 2 | 8 | 12 | 4 | 6 | 2 | 1 | . | . | 3 | 5 | 10 | 9 | 5 | . | . | . | . | . | ||||
| Orange Tip | 61 | . | 6 | 18 | 11 | 7 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 5 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | . | . | . | . | ||||
| Common Blue | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Holly Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | ||||
| White Admiral | 7 | . | . | . | . | . | . | . | . | . | . | . | 3 | 3 | 1 | . | . | . | . | . | . | . | . | ||||
| Purple Emperor | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 21 | . | . | . | . | . | 1 | . | . | 1 | . | . | 1 | 1 | 3 | 2 | 2 | . | 1 | 2 | . | 2 | 5 | ||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | . | . | . | ||||
| Small Tortoiseshell | 6 | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | 1 | 1 | . | . | . | ||||
| Peacock | 48 | 1 | 2 | . | 1 | . | . | . | 1 | . | . | . | . | 2 | 20 | 8 | 6 | 1 | 1 | . | . | 1 | 1 | ||||
| Comma | 20 | 3 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 2 | 2 | 3 | . | . | 1 | . | 2 | 1 | ||||
| Pearl-bordered Fritillary | 2 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 9 | . | . | . | . | . | . | . | . | . | . | . | 5 | . | 4 | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | 51 | . | . | . | . | . | . | . | . | . | . | 6 | 17 | 7 | 11 | 6 | 4 | . | . | . | . | . | . | ||||
| Speckled Wood | 272 | . | . | 1 | 5 | 1 | 5 | 1 | 4 | 10 | 8 | 10 | 9 | 4 | 10 | 22 | 28 | 37 | 45 | 29 | 11 | 12 | 19 | ||||
| Wall Brown | 13 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | 2 | 3 | 4 | 2 | . | . | . | . | ||||
| Marbled White | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 289 | . | . | . | . | . | . | . | . | . | . | 1 | 42 | 75 | 90 | 44 | 31 | 6 | . | . | . | . | . | ||||
| Meadow Brown | 157 | . | . | . | . | . | . | . | . | . | 1 | 20 | 32 | 46 | 22 | 22 | 13 | 1 | . | . | . | . | . | ||||
| Small Heath | 3 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | ||||
| Ringlet | 169 | . | . | . | . | . | . | . | . | . | . | 16 | 82 | 31 | 30 | 6 | 4 | . | . | . | . | . | . | ||||