
| 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 | 50 | . | . | . | . | . | 1 | 17 | 10 | 13 | 3 | 6 | . | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 2 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 7 | . | 1 | 1 | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | 1 | |||||
| Large White | 11 | . | . | . | . | . | . | 2 | . | . | . | . | 2 | 2 | . | . | 4 | . | . | . | . | 1 | |||||
| Small White | 2 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | |||||
| Green-veined White | 126 | . | 1 | 1 | 3 | 1 | 3 | 2 | . | 2 | . | 6 | 7 | 16 | 15 | 9 | 19 | 20 | 7 | 11 | 1 | . | |||||
| Orange Tip | 15 | . | 1 | 4 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||
| Brown Argus | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Northern Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Holly Blue | NI | . | 3 | 2 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Duke of Burgundy Fritillary | 3 | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 2 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||
| Peacock | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | 106 | . | . | . | 15 | 27 | 16 | 30 | 7 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| High Brown Fritillary | 84 | . | . | . | . | . | . | . | . | 2 | 5 | 9 | 23 | 29 | 10 | 6 | . | . | . | . | . | . | |||||
| Grayling | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||||
| Meadow Brown | 179 | . | . | . | . | . | . | . | . | 8 | 11 | 28 | 47 | 30 | 33 | 12 | 6 | 1 | 2 | 1 | . | . | |||||
| Small Heath | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||