
| 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 | 12 | 38 | 2 | 8 | . | . | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 18 | 6 | 6 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 8 | 4 | . | 2 | 2 | 2 | . | . | . | . | 4 | . | 4 | . | 4 | . | . | . | . | |||||||
| Large White | 2 | . | 6 | 4 | . | . | . | . | 2 | 2 | . | 2 | 4 | 6 | 4 | 2 | . | . | . | |||||||
| Small White | . | . | . | . | . | . | . | . | 8 | . | 2 | 2 | 2 | 4 | 6 | . | . | 2 | . | |||||||
| Green-veined White | 2 | . | . | . | . | . | . | . | 4 | 6 | 8 | . | 4 | . | . | . | . | . | . | |||||||
| Green Hairstreak | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Northern Brown Argus | . | . | . | . | . | 8 | 22 | 8 | 12 | 12 | 8 | 2 | . | . | . | . | . | . | . | |||||||
| Common Blue | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Duke of Burgundy Fritillary | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 2 | . | 6 | 2 | 2 | |||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | . | . | . | . | . | |||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | 12 | 22 | . | . | 2 | . | . | . | . | . | . | |||||||
| Peacock | . | . | . | . | . | . | . | . | . | . | 20 | 18 | 32 | 38 | 12 | . | 6 | . | 2 | |||||||
| Comma | . | . | . | . | . | . | . | 2 | 2 | . | 6 | . | . | . | . | . | . | . | . | |||||||
| Small Pearl-bordered Fritillary | . | . | . | . | . | 2 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Pearl-bordered Fritillary | 28 | 8 | 6 | 16 | 6 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| High Brown Fritillary | . | . | . | . | . | . | 4 | 16 | 46 | 24 | 14 | 4 | 2 | 2 | . | . | . | . | . | |||||||
| Speckled Wood | 36 | 12 | . | 12 | 36 | 104 | 118 | 88 | 128 | 72 | 86 | 72 | 54 | 142 | 124 | 130 | 106 | 112 | 60 | |||||||
| Wall Brown | 16 | 4 | 6 | 6 | . | . | . | . | . | . | . | . | 16 | 2 | . | . | . | . | . | |||||||
| Grayling | . | . | . | . | . | . | 30 | 16 | 34 | 12 | 10 | 10 | . | . | 2 | . | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | 4 | 50 | 174 | 188 | 162 | 80 | 22 | . | 2 | . | . | . | . | . | |||||||