
| 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 | 90 | . | . | . | . | . | . | 13 | 31 | 17 | 28 | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Large White | 34 | . | . | 2 | 6 | 5 | 1 | 7 | . | . | . | 2 | 3 | . | 1 | 1 | 4 | 1 | . | 1 | . | . | |||||
| Small White | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | |||||
| Green-veined White | 317 | 6 | 10 | 13 | 15 | 11 | 8 | 10 | . | 1 | 3 | 64 | 48 | 13 | 46 | 39 | 26 | 4 | . | . | . | . | |||||
| Orange Tip | 7 | . | 1 | 4 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Brown Argus | NI | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||
| Common Blue | 4 | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Holly Blue | NI | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Duke of Burgundy Fritillary | 2 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 6 | . | . | . | . | . | . | . | . | 1 | . | 2 | 1 | . | 1 | . | . | . | . | 1 | . | . | |||||
| Peacock | 12 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 5 | 5 | . | . | 1 | . | . | |||||
| Small Pearl-bordered Fritillary | 11 | . | . | . | . | . | . | . | 2 | 5 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | 117 | . | . | 23 | 38 | 15 | 24 | 17 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| High Brown Fritillary | 234 | . | . | . | . | . | . | . | 28 | 35 | 71 | 63 | 29 | 3 | 2 | 1 | 2 | . | . | . | . | . | |||||
| Grayling | 4 | . | . | . | . | . | . | . | 2 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Meadow Brown | 363 | . | . | . | . | . | . | . | 25 | 53 | 75 | 80 | 53 | 33 | 30 | 11 | 3 | . | . | . | . | . | |||||