
| 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 | . | . | . | . | . | . | . | 2 | 2 | . | 2 | 2 | . | 2 | . | . | . | . | . | . | . | . | . | |||
| Dingy Skipper | . | . | . | . | 2 | 8 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Wood White | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | . | 10 | 6 | 22 | . | 4 | 10 | 2 | . | . | . | . | . | . | . | 2 | 4 | . | . | 2 | . | . | . | |||
| Large White | . | . | . | . | . | 4 | . | . | . | . | . | 4 | 2 | . | . | 6 | . | . | 10 | . | . | . | . | |||
| Small White | . | . | . | . | 4 | 18 | 2 | . | . | . | . | 2 | . | 2 | . | 8 | . | . | 2 | . | . | . | . | |||
| Green-veined White | . | . | . | 6 | 6 | . | 6 | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | |||
| Orange Tip | . | . | 14 | 10 | 6 | 8 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Green Hairstreak | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Northern Brown Argus | . | . | . | . | . | . | 4 | . | 6 | 14 | 20 | 6 | 6 | 4 | . | 2 | . | . | . | . | . | . | . | |||
| Common Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 4 | 2 | . | . | . | |||
| Holly Blue | . | 4 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |||
| Duke of Burgundy Fritillary | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Red Admiral | 2 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | . | . | 2 | . | . | 4 | 6 | 2 | |||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | |||
| Small Tortoiseshell | . | . | 2 | . | . | . | . | . | . | . | . | 2 | 4 | 2 | 2 | . | . | 2 | . | . | . | . | . | |||
| Peacock | 26 | 26 | 40 | 10 | 4 | 2 | . | . | . | . | . | . | . | . | 6 | 34 | 50 | 18 | 10 | . | . | 2 | 4 | |||
| Comma | 6 | . | 4 | . | . | . | . | . | . | . | . | 2 | . | 2 | . | 6 | 4 | 2 | . | 2 | 2 | . | . | |||
| Pearl-bordered Fritillary | . | . | . | 4 | 28 | 56 | 18 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| High Brown Fritillary | . | . | . | . | . | . | . | . | . | 2 | 4 | 46 | 40 | 30 | 16 | 6 | . | . | . | . | . | . | . | |||
| Speckled Wood | 2 | 8 | 8 | 16 | 12 | 6 | 24 | 24 | 40 | 36 | 34 | 12 | 20 | 6 | 2 | 12 | 16 | 22 | 32 | 24 | 40 | 78 | 74 | |||
| Wall Brown | . | . | . | . | 26 | 22 | 30 | 24 | . | . | 2 | . | . | . | 8 | 10 | 8 | 2 | 6 | 4 | . | . | . | |||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | 4 | 14 | 16 | 10 | 4 | 4 | . | . | . | . | . | . | |||
| Meadow Brown | . | . | . | . | . | . | . | . | 2 | 20 | 46 | 142 | 162 | 124 | 90 | 38 | 10 | 2 | . | . | . | . | . | |||