
| 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 | 71 | . | . | . | . | . | . | . | 2 | 17 | 22 | 10 | 9 | 7 | 4 | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 4 | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 33 | 1 | . | 1 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | 8 | 6 | 5 | 1 | 2 | |||||
| Large White | 146 | . | . | 1 | 6 | 2 | 16 | 1 | 2 | 1 | 2 | . | . | 1 | . | 1 | 5 | 31 | 20 | 17 | 12 | 9 | |||||
| Small White | 16 | . | . | 1 | . | 1 | 1 | . | . | . | 1 | . | . | . | . | 2 | . | 5 | . | . | . | . | |||||
| Green-veined White | 38 | . | . | . | 1 | 6 | 5 | 8 | 1 | 2 | . | . | . | . | 1 | 1 | 1 | 3 | 6 | . | . | . | |||||
| Orange Tip | 34 | . | . | 2 | 5 | 5 | 8 | 6 | 3 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | 2 | |||||
| Purple Hairstreak | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | 1 | . | . | . | |||||
| Common Blue | 7 | . | . | . | . | . | . | . | . | . | 4 | 3 | . | . | . | . | . | . | . | . | . | . | |||||
| Duke of Burgundy Fritillary | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 10 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 3 | . | . | . | . | |||||
| Peacock | 123 | 9 | 4 | 4 | 9 | 6 | 6 | . | . | . | . | . | . | . | . | . | 1 | 25 | 20 | 17 | 4 | . | |||||
| Small Pearl-bordered Fritillary | 32 | . | . | . | . | . | . | . | 10 | 10 | 8 | 2 | 2 | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | 56 | . | . | . | . | . | 22 | 13 | 14 | 7 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| High Brown Fritillary | 38 | . | . | . | . | . | . | . | . | . | . | . | 13 | 7 | 7 | 8 | 2 | . | . | . | . | . | |||||
| Wall Brown | 11 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | 2 | 2 | 2 | 2 | |||||
| Meadow Brown | 239 | . | . | . | . | . | . | . | . | . | 24 | 34 | 44 | 46 | 45 | 16 | 11 | . | 1 | 11 | 1 | . | |||||