
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 29 | 6 | 36 | 25 | 5 | . | . | . | . | ||||
| Large Skipper | 93 | . | . | . | . | . | . | . | 1 | 9 | 29 | 17 | 17 | 11 | 4 | 1 | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 2 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 30 | . | . | . | . | . | 1 | 8 | 5 | 5 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 54 | 5 | 1 | 8 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | 3 | 9 | 2 | 1 | 18 | . | . | ||||
| Large White | 95 | . | . | . | . | . | 9 | 2 | 3 | 8 | 3 | 1 | 1 | 1 | 4 | 5 | 10 | 16 | 2 | 19 | 3 | . | . | ||||
| Small White | 28 | . | . | . | . | . | . | . | 2 | 4 | 3 | . | . | . | . | . | . | 3 | 3 | 12 | . | . | . | ||||
| Green-veined White | 70 | . | . | . | . | 2 | 4 | 6 | . | 2 | 1 | . | . | . | 5 | 4 | 7 | 11 | 11 | 5 | 3 | 1 | . | ||||
| Orange Tip | 10 | . | . | 2 | 2 | 1 | 1 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 6 | . | . | ||||
| Common Blue | 7 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | 3 | . | 1 | . | ||||
| Duke of Burgundy Fritillary | 5 | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| White Admiral | 4 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | ||||
| Red Admiral | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | 1 | . | ||||
| Painted Lady | 22 | . | . | . | . | . | . | . | . | . | . | . | 7 | 3 | . | 1 | 1 | 1 | 1 | 3 | 3 | . | 1 | ||||
| Small Tortoiseshell | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | . | . | . | . | ||||
| Peacock | 166 | 3 | 1 | 4 | 2 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | 17 | 35 | 52 | 13 | 32 | . | . | ||||
| Comma | 14 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | 2 | 1 | . | 3 | . | . | ||||
| Small Pearl-bordered Fritillary | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 17 | . | . | . | . | . | . | 8 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | 14 | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 1 | . | . | . | . | . | . | . | ||||
| Marsh Fritillary | 7 | . | . | . | . | . | . | . | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 132 | . | . | 2 | 1 | 1 | 2 | 1 | 2 | 6 | 11 | 5 | 3 | 1 | . | 1 | 7 | 12 | 23 | 7 | 13 | 17 | 13 | ||||
| Marbled White | 26 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 16 | . | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 106 | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 22 | 26 | 18 | 11 | 4 | 2 | . | . | ||||
| Meadow Brown | 763 | . | . | . | . | . | . | . | . | . | 49 | 163 | 154 | 127 | 122 | 31 | 28 | 8 | 3 | . | 1 | . | . | ||||
| Small Heath | 22 | . | . | . | . | . | . | . | 4 | 4 | . | . | . | . | . | . | . | . | 2 | 7 | 2 | 1 | . | ||||
| Ringlet | 136 | . | . | . | . | . | . | . | . | . | . | 10 | 9 | 48 | 39 | 4 | 1 | 2 | . | . | . | . | . | ||||