
| 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 | 21 | . | . | . | . | . | . | 1 | 5 | 7 | 3 | . | 1 | 1 | 3 | . | . | . | . | . | . | . | . | . | |||
| Dingy Skipper | 40 | . | . | . | . | . | 18 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | 52 | 4 | . | 3 | 1 | 3 | 5 | . | 2 | 3 | . | . | . | 2 | . | . | . | 5 | 6 | 5 | . | 1 | . | 1 | |||
| Large White | 71 | . | 1 | 1 | 2 | 2 | 7 | . | 7 | 2 | 3 | . | . | . | 1 | 5 | 7 | 8 | 9 | 3 | 1 | 2 | 1 | . | |||
| Small White | 21 | . | . | 1 | . | . | . | . | 2 | . | 1 | . | . | . | . | 6 | 3 | 7 | . | . | . | . | . | . | |||
| Green-veined White | 44 | . | . | . | . | 3 | 5 | . | . | 4 | . | . | 1 | . | 5 | 3 | . | . | 5 | . | . | . | . | . | |||
| Orange Tip | 31 | . | 2 | 2 | 2 | 6 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Green Hairstreak | 11 | . | . | . | . | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||
| Small Copper | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Northern Brown Argus | 30 | . | . | . | . | . | . | 2 | 8 | 8 | 6 | . | 2 | 3 | . | . | . | . | . | . | . | . | . | . | |||
| Common Blue | 53 | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | 3 | 12 | 12 | 20 | 3 | . | . | . | |||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||
| Red Admiral | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | 1 | 1 | . | |||
| Painted Lady | 23 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 4 | . | 1 | 4 | 11 | . | 2 | . | . | |||
| Small Tortoiseshell | 55 | . | 1 | 2 | 1 | . | 2 | . | . | . | . | . | 3 | . | 1 | 7 | 6 | 9 | 4 | 7 | 5 | 2 | 3 | 1 | |||
| Peacock | 100 | 5 | 7 | 7 | 3 | 6 | 1 | . | . | . | . | . | . | . | . | . | 8 | 18 | 22 | 15 | 1 | . | . | . | |||
| Comma | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Small Pearl-bordered Fritillary | 15 | . | . | . | . | . | . | . | 4 | 4 | 2 | . | 4 | 1 | . | . | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | 79 | . | . | . | . | 1 | 37 | 4 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| High Brown Fritillary | 49 | . | . | . | . | . | . | . | . | . | 4 | 2 | 6 | 13 | 8 | 5 | 1 | 5 | 3 | 2 | . | . | . | . | |||
| Speckled Wood | 147 | . | 2 | 1 | 7 | . | 2 | . | 9 | 11 | 8 | 1 | 5 | 4 | 2 | 1 | 4 | 4 | 12 | 10 | 23 | 23 | 17 | 6 | |||
| Wall Brown | 108 | . | . | . | . | 4 | 7 | 2 | 5 | 2 | . | . | . | . | . | 3 | 1 | 9 | 24 | 28 | 9 | . | 1 | . | |||
| Grayling | 27 | . | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 1 | 1 | 5 | 4 | 6 | 3 | . | . | . | . | |||
| Meadow Brown | 219 | . | . | . | . | . | . | . | . | . | 4 | 4 | 18 | 41 | 36 | 40 | 20 | 34 | 16 | 6 | . | . | . | . | |||
| Small Heath | 12 | . | . | . | . | . | 1 | 3 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||