
| 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 | 61 | . | . | . | . | . | . | . | 4 | 9 | 13 | 14 | 13 | 10 | . | . | . | . | . | ||||||||
| Large Skipper | 50 | . | . | . | . | . | 2 | 8 | 14 | . | 6 | 8 | . | 3 | . | . | . | . | . | ||||||||
| Dingy Skipper | 2 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | NI | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Wood White | NI | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||||
| Brimstone | NI | 2 | 7 | 9 | 4 | 6 | 2 | . | . | 2 | 1 | 1 | 13 | 1 | 1 | 1 | 3 | 1 | . | ||||||||
| Large White | 11 | . | . | . | . | 1 | . | . | . | . | . | 3 | 3 | . | 1 | . | . | 1 | . | ||||||||
| Small White | 16 | . | . | 1 | 1 | . | . | . | . | 1 | 1 | 1 | 1 | 6 | . | . | 1 | 1 | . | ||||||||
| Green-veined White | 6 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||||
| Orange Tip | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||||
| Small Copper | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | ||||||||
| Brown Argus | 12 | . | . | . | . | . | . | . | . | . | . | . | . | 8 | . | 1 | 1 | . | . | ||||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 6 | 1 | . | . | ||||||||
| White Admiral | 5 | . | . | . | . | . | . | . | 2 | . | 2 | 1 | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 6 | . | . | . | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | . | . | ||||||||
| Painted Lady | 6 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 3 | . | . | . | . | ||||||||
| Peacock | NI | 1 | 4 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Comma | NI | 9 | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | ||||||||
| Small Pearl-bordered Fritillary | 105 | . | . | . | . | 18 | 36 | 20 | 2 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Pearl-bordered Fritillary | NI | . | . | . | 7 | 11 | 7 | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Silver-washed Fritillary | 96 | . | . | . | . | . | . | . | 4 | 8 | 23 | 12 | 27 | 23 | . | . | . | . | . | ||||||||
| Marsh Fritillary | NI | . | . | . | . | 5 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 27 | . | . | . | 1 | . | 4 | . | 2 | . | . | . | 2 | 4 | . | 4 | 1 | 1 | . | ||||||||
| Marbled White | 203 | . | . | . | . | . | . | . | 14 | 13 | 41 | 41 | 84 | 4 | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 87 | . | . | . | . | . | . | . | . | 1 | 5 | 28 | 26 | 20 | 3 | . | . | . | . | ||||||||
| Meadow Brown | 72 | . | . | . | . | . | . | . | 5 | 4 | 12 | 9 | 15 | 9 | 5 | 5 | . | . | . | ||||||||
| Small Heath | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Ringlet | 167 | . | . | . | . | . | . | . | 20 | 26 | 61 | 51 | 23 | 1 | . | . | . | . | . | ||||||||