
| 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 | 27 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 8 | 4 | 14 | 7 | 1 | 1 | . | . | . | . | |||
| Large Skipper | 69 | . | . | . | . | . | . | . | . | . | 2 | 2 | 20 | 36 | 6 | . | 3 | . | . | . | . | . | . | . | |||
| Clouded Yellow | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 3 | . | |||
| Brimstone | 185 | 9 | 3 | 2 | 1 | 12 | 3 | 9 | . | 3 | 4 | 1 | . | . | . | . | 8 | . | 12 | 16 | 55 | 5 | 19 | . | |||
| Large White | 8 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 3 | 1 | 1 | 1 | . | . | . | . | |||
| Small White | 55 | . | . | . | . | 1 | . | . | . | . | . | . | 2 | 1 | . | . | 10 | 12 | 3 | 3 | 15 | 3 | 2 | . | |||
| Green-veined White | 63 | . | . | . | . | . | 5 | . | 10 | . | 1 | 1 | . | . | . | 2 | 11 | . | 20 | 8 | . | . | . | . | |||
| Orange Tip | 28 | . | . | 1 | 4 | 5 | 2 | 16 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Common Blue | 4 | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | |||
| White Admiral | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | . | . | . | . | . | |||
| Red Admiral | 11 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | 1 | . | . | . | . | . | . | 1 | 2 | 1 | |||
| Painted Lady | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 3 | . | |||
| Small Tortoiseshell | 3 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||
| Peacock | 154 | 9 | 6 | 13 | 11 | 10 | 3 | . | . | . | . | . | . | . | . | . | 2 | 12 | 35 | 31 | 20 | 1 | . | . | |||
| Comma | 10 | 4 | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | 1 | |||
| Small Pearl-bordered Fritillary | 3 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Silver-washed Fritillary | 79 | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 14 | 6 | 14 | 11 | 17 | 9 | 2 | . | . | . | |||
| Speckled Wood | 252 | . | . | 3 | . | 3 | 8 | 6 | 7 | 13 | 8 | 6 | 6 | 2 | . | 2 | 8 | 16 | 19 | 23 | 14 | 49 | 12 | . | |||
| Marbled White | 39 | . | . | . | . | . | . | . | . | . | . | . | 6 | 17 | 9 | 2 | 5 | . | . | . | . | . | . | . | |||
| Gatekeeper / Hedge Brown | 222 | . | . | . | . | . | . | . | . | . | . | . | . | . | 9 | 23 | 64 | 62 | 61 | 15 | 3 | . | . | . | |||
| Meadow Brown | 281 | . | . | . | . | . | . | . | . | . | 1 | . | 29 | 40 | 41 | 28 | 40 | 59 | 32 | 7 | . | 1 | 1 | . | |||
| Ringlet | 539 | . | . | . | . | . | . | . | . | . | . | . | 80 | 187 | 139 | 77 | 42 | 11 | 2 | 1 | . | . | . | . | |||