
| 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 | ||||||||||||||||||||||||||
| Large Skipper | 100 | . | . | . | . | . | . | . | . | 3 | 36 | 9 | 10 | 16 | 10 | 13 | 2 | 1 | . | . | . | . | . | . | . | ||
| Dingy Skipper | 4 | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Brimstone | 65 | 2 | 1 | 12 | 6 | 5 | 3 | 4 | 4 | . | 1 | . | . | . | . | . | . | . | 2 | 1 | 7 | 6 | . | 5 | 3 | ||
| Large White | 33 | . | . | . | . | . | . | 2 | 2 | 1 | 2 | 2 | . | 1 | . | . | . | 4 | 3 | 5 | 7 | 2 | 1 | . | . | ||
| Small White | 40 | . | . | . | 2 | 1 | . | . | 2 | 1 | . | . | . | . | . | . | 4 | . | 12 | 7 | 6 | 3 | . | . | . | ||
| Green-veined White | 245 | . | . | . | . | 2 | 3 | 10 | 11 | 29 | 20 | 19 | 4 | 6 | 2 | 3 | 2 | 34 | 49 | 6 | 15 | 13 | 12 | 4 | . | ||
| Orange Tip | 45 | . | . | . | 1 | 5 | 14 | 19 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Purple Hairstreak | 11 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 3 | 3 | 2 | . | ||
| Small Copper | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||
| Northern Brown Argus | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | ||
| Duke of Burgundy Fritillary | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||
| Small Tortoiseshell | 34 | 2 | . | 1 | 1 | . | . | 2 | . | . | . | . | . | . | . | . | . | 10 | 13 | 4 | . | . | . | . | . | ||
| Peacock | 124 | 7 | 11 | 11 | 13 | 4 | 5 | 1 | 1 | . | . | . | . | . | . | . | . | . | 12 | 15 | 24 | 7 | . | 1 | 2 | ||
| Small Pearl-bordered Fritillary | 35 | . | . | . | . | . | . | . | . | 4 | 13 | 5 | 4 | 2 | 1 | 3 | 1 | . | . | . | . | . | . | . | . | ||
| Pearl-bordered Fritillary | 124 | . | . | . | . | . | . | 23 | 40 | 26 | 20 | 12 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | ||
| High Brown Fritillary | 68 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 12 | 26 | 17 | 2 | 1 | 2 | 2 | 3 | 2 | . | . | ||
| Wall Brown | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | . | ||
| Meadow Brown | 276 | . | . | . | . | . | . | . | . | . | . | 2 | 21 | 21 | 53 | 58 | 52 | 34 | 14 | 13 | 6 | 2 | . | . | . | ||
| Small Heath | 11 | . | . | . | . | . | . | . | . | 1 | 6 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||