
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | 18 | 13 | 16 | 6 | 8 | 2 | . | . | . | |||||
| Large Skipper | 68 | . | . | . | . | . | . | . | . | 4 | 26 | 20 | 11 | . | . | 1 | . | . | . | . | . | . | |||||
| Dingy Skipper | 8 | . | . | . | . | 3 | 2 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 26 | . | . | . | 3 | 3 | 6 | 4 | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 43 | 5 | 5 | 6 | 2 | . | . | . | . | . | . | . | . | . | 1 | . | . | 9 | 6 | . | 2 | . | |||||
| Large White | 22 | . | . | . | 5 | 1 | 1 | . | 1 | . | . | . | . | 2 | 3 | . | 1 | 3 | . | . | . | . | |||||
| Small White | 21 | . | . | . | 4 | . | 2 | 1 | 1 | . | . | . | . | . | 2 | 1 | 1 | . | 3 | . | . | . | |||||
| Green-veined White | 61 | . | . | 1 | 4 | 5 | 1 | 4 | 1 | . | . | 1 | . | 6 | 6 | 10 | 4 | 2 | 3 | 1 | . | 1 | |||||
| Orange Tip | 4 | . | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 27 | . | . | . | . | . | . | 2 | . | 1 | 1 | . | . | . | . | 2 | 2 | 2 | 8 | 2 | . | . | |||||
| Common Blue | 20 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 4 | 3 | 4 | . | |||||
| Duke of Burgundy Fritillary | 21 | . | . | . | . | 4 | 2 | 6 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| White Admiral | 4 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | |||||
| Red Admiral | 16 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 2 | . | 1 | 2 | 3 | . | 1 | |||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Small Tortoiseshell | 79 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | . | 1 | . | 1 | 6 | 36 | 9 | 1 | |||||
| Peacock | 44 | 1 | 2 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | 22 | 4 | 2 | 3 | . | 1 | . | |||||
| Comma | 23 | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | 6 | . | 2 | 1 | 1 | 4 | 3 | |||||
| Pearl-bordered Fritillary | 40 | . | . | . | 1 | 7 | 9 | 10 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 4 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||
| Marsh Fritillary | 12 | . | . | . | . | . | . | 1 | 5 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 76 | . | . | 1 | 4 | 2 | 6 | 3 | . | 2 | 1 | 2 | . | 1 | . | . | 8 | . | 10 | 7 | 13 | . | |||||
| Marbled White | 12 | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 1 | 5 | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 56 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 12 | 14 | 12 | 7 | 3 | . | . | . | |||||
| Meadow Brown | 590 | . | . | . | . | . | . | . | . | . | 9 | 36 | 156 | 129 | 68 | 42 | 5 | 2 | . | . | . | . | |||||
| Small Heath | 28 | . | . | . | . | . | 1 | 1 | 4 | 6 | 1 | 4 | 1 | . | . | . | . | . | 3 | 1 | . | . | |||||
| Ringlet | 104 | . | . | . | . | . | . | . | . | . | 7 | 16 | 23 | 20 | 12 | 3 | 1 | . | . | . | . | . | |||||
| Unknown White | NI | . | . | . | . | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||