
| 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 | 19 | . | . | . | . | . | . | . | 2 | 3 | 6 | 2 | 1 | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 19 | . | . | . | 2 | 1 | 7 | 2 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 176 | 8 | 1 | 9 | 15 | 13 | 5 | 5 | 1 | 2 | . | . | . | . | 11 | 17 | 11 | 18 | 24 | 15 | 1 | . | |||||
| Large White | 18 | . | . | . | . | . | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 3 | 1 | . | 1 | . | . | . | . | |||||
| Small White | 9 | . | . | . | . | 2 | . | 2 | . | . | 1 | . | . | . | 2 | . | . | . | . | . | . | . | |||||
| Green-veined White | 35 | . | . | 8 | 5 | . | 3 | . | 1 | . | 1 | . | 1 | 3 | 1 | . | . | . | 1 | 5 | . | . | |||||
| Orange Tip | 6 | . | . | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 7 | . | . | 1 | 1 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Northern Brown Argus | 62 | . | . | . | . | . | . | . | 2 | 11 | 18 | 5 | 6 | 3 | . | 3 | 1 | . | . | . | . | . | |||||
| Common Blue | 135 | . | . | . | . | . | . | . | 1 | 2 | 14 | 20 | 35 | 23 | 8 | 8 | 4 | 2 | 1 | . | . | . | |||||
| Holly Blue | 10 | . | . | 4 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Duke of Burgundy Fritillary | 53 | . | . | . | . | 21 | 21 | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 2 | . | . | 1 | |||||
| Painted Lady | 18 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 8 | 5 | 1 | . | . | |||||
| Small Tortoiseshell | 3 | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | |||||
| Peacock | 363 | 8 | 4 | 11 | 7 | . | 1 | . | . | . | . | . | . | . | 10 | 95 | 107 | 91 | 9 | 4 | . | . | |||||
| Comma | 15 | 2 | . | 1 | 1 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | 1 | 3 | . | 1 | 1 | . | |||||
| Small Pearl-bordered Fritillary | 105 | . | . | . | . | . | . | . | 16 | 37 | 28 | 1 | 1 | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | 61 | . | . | . | . | 25 | 17 | 6 | 6 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| High Brown Fritillary | 128 | . | . | . | . | . | . | . | . | . | 2 | 30 | 31 | 16 | 7 | 13 | 7 | 6 | . | . | . | . | |||||
| Dark Green Fritillary | 54 | . | . | . | . | . | . | . | . | . | 19 | 10 | 4 | 3 | 3 | . | . | 1 | . | . | . | . | |||||
| Silver-washed Fritillary | 40 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 7 | 10 | 10 | 7 | 2 | . | . | |||||
| Speckled Wood | 5 | . | . | . | . | 1 | . | . | . | . | 1 | . | . | 1 | . | 1 | . | . | . | . | . | . | |||||
| Wall Brown | 16 | . | . | . | . | 1 | 6 | 2 | . | . | . | . | . | . | 1 | . | . | 3 | 1 | 1 | . | . | |||||
| Grayling | 75 | . | . | . | . | . | . | . | . | . | 1 | 7 | 15 | 18 | 9 | 12 | 2 | 6 | . | 1 | . | . | |||||
| Meadow Brown | 213 | . | . | . | . | . | . | . | . | . | 17 | 36 | 24 | 35 | 25 | 30 | 12 | 8 | . | . | . | . | |||||
| Small Heath | 53 | . | . | . | . | . | . | . | 6 | 8 | 4 | 1 | 7 | 6 | 3 | 6 | 3 | 3 | . | 1 | . | . | |||||