
| 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 | 35 | . | . | . | . | . | . | 2 | 4 | 6 | 7 | 7 | 1 | . | 4 | 1 | . | . | . | . | . | . | |||||
| Dingy Skipper | 26 | . | . | . | . | 5 | 5 | 8 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 131 | . | 3 | 8 | 15 | 14 | 4 | 7 | . | . | . | . | . | . | . | . | 5 | 15 | 21 | 11 | 11 | 5 | |||||
| Large White | 10 | . | . | 1 | . | . | . | 1 | . | . | . | . | . | 1 | . | . | 5 | . | . | 1 | 1 | . | |||||
| Small White | 17 | . | . | . | 1 | . | . | 2 | 1 | . | . | . | 2 | 2 | . | . | 3 | 4 | . | . | . | . | |||||
| Green-veined White | 5 | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||
| Orange Tip | 24 | . | 1 | 3 | 12 | 6 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 2 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Northern Brown Argus | 88 | . | . | . | . | . | . | 1 | 4 | 4 | 14 | 28 | 11 | 17 | 6 | . | 1 | . | . | . | . | . | |||||
| Common Blue | 101 | . | . | . | . | . | . | . | . | 2 | 2 | 10 | 36 | 16 | 20 | 7 | 5 | 3 | . | . | . | . | |||||
| Holly Blue | 9 | . | . | 2 | 3 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Duke of Burgundy Fritillary | 64 | . | . | . | 10 | 19 | 12 | 13 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 5 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | 1 | . | . | 1 | |||||
| Small Tortoiseshell | 9 | . | . | 2 | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 1 | 1 | . | 1 | . | . | |||||
| Peacock | 268 | 8 | 13 | 15 | 10 | 3 | 1 | 1 | . | 1 | . | . | . | . | . | 3 | 26 | 59 | 58 | 59 | 7 | . | |||||
| Comma | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | |||||
| Small Pearl-bordered Fritillary | 57 | . | . | . | . | . | . | 6 | 12 | 9 | 6 | 15 | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | 100 | . | . | . | . | 30 | 35 | 19 | 3 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| High Brown Fritillary | 158 | . | . | . | . | . | . | . | . | . | 1 | 11 | 46 | 31 | 24 | 19 | 11 | 9 | 4 | 2 | . | . | |||||
| Dark Green Fritillary | 36 | . | . | . | . | . | . | . | . | . | 2 | 9 | 2 | 4 | 6 | 4 | 5 | 3 | 1 | . | . | . | |||||
| Silver-washed Fritillary | 23 | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 2 | 3 | 3 | 4 | 6 | 2 | . | . | |||||
| Speckled Wood | 4 | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | |||||
| Wall Brown | 65 | . | . | . | . | 7 | 7 | 6 | 2 | 1 | . | . | . | . | . | . | . | 4 | 9 | 8 | 8 | 3 | |||||
| Grayling | 44 | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 13 | 13 | 3 | 5 | 4 | . | . | . | |||||
| Meadow Brown | 279 | . | . | . | . | . | . | . | . | 1 | 4 | 18 | 55 | 71 | 39 | 44 | 18 | 18 | 8 | 3 | . | . | |||||
| Small Heath | 110 | . | . | . | . | . | . | 2 | 5 | 5 | 7 | 20 | 15 | 16 | 12 | 4 | 3 | 6 | 2 | 4 | 3 | . | |||||