
| 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 | ||||||||||||||||||||||||||
| Large Skipper | . | . | . | . | . | . | . | . | 6 | 2 | . | 5 | 1 | . | . | . | . | . | . | |||||||
| Dingy Skipper | . | . | . | . | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 2 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||
| Large White | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | . | . | . | . | . | |||||||
| Small White | . | 1 | . | . | 2 | . | . | . | . | . | . | 1 | 4 | . | . | . | . | . | . | |||||||
| Green-veined White | . | 1 | 8 | 35 | 22 | 40 | 18 | 11 | 1 | 2 | 1 | 11 | 52 | 93 | 67 | 86 | 56 | 3 | . | |||||||
| Orange Tip | . | . | 23 | 47 | 39 | 35 | 10 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Northern Brown Argus | . | . | . | . | . | . | 8 | 12 | 15 | 18 | 13 | 20 | 5 | 14 | 2 | . | . | . | . | |||||||
| Common Blue | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||||
| Holly Blue | . | 3 | 5 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | 6 | 3 | |||||||
| Small Tortoiseshell | 1 | 2 | 3 | 4 | 2 | 2 | . | . | . | . | . | 2 | 4 | 6 | 5 | 2 | 4 | . | . | |||||||
| Peacock | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Pearl-bordered Fritillary | . | . | . | . | . | . | . | 4 | 7 | 3 | . | . | . | . | . | . | . | . | . | |||||||
| Pearl-bordered Fritillary | . | . | . | . | 10 | 18 | 8 | 6 | 4 | 1 | . | . | . | . | . | . | . | . | . | |||||||
| High Brown Fritillary | . | . | . | . | . | . | . | . | . | . | . | 6 | 13 | 9 | 2 | . | 3 | . | . | |||||||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | |||||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | . | 40 | 178 | 138 | 190 | 31 | 23 | 16 | . | . | |||||||
| Small Heath | . | . | . | 1 | 6 | 44 | 38 | 4 | 6 | . | . | . | . | . | . | . | . | . | . | |||||||