
| 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 | ||||||||||||||||||||||||||
| Brimstone | 4 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 6 | . | 6 | . | . | . | |||
| Large White | 2 | . | 6 | 6 | 2 | . | 6 | 12 | . | . | 2 | . | 4 | 2 | 30 | 22 | 18 | 14 | 42 | 6 | 8 | 8 | . | |||
| Small White | . | . | . | . | . | . | . | . | . | 2 | 14 | 4 | . | 4 | 2 | 4 | 4 | 4 | 22 | . | 6 | 8 | . | |||
| Green-veined White | . | . | . | . | . | . | 2 | 4 | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | 2 | . | |||
| Green Hairstreak | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | |||
| Northern Brown Argus | . | . | . | . | . | . | . | 2 | 4 | 4 | 8 | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Common Blue | . | . | . | . | 2 | 4 | 2 | . | 2 | 2 | . | . | . | . | 6 | . | . | 4 | 12 | . | . | . | . | |||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 2 | 20 | . | |||
| Painted Lady | . | . | . | . | . | . | . | . | . | 2 | 6 | 8 | 4 | . | 2 | 2 | . | 30 | 8 | 32 | 18 | 16 | 14 | |||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | 6 | . | . | . | 2 | . | . | 18 | 10 | 12 | 4 | 4 | . | |||
| Peacock | . | 4 | 14 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | 2 | . | 4 | 2 | . | |||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | |||
| Small Pearl-bordered Fritillary | . | . | . | 2 | 2 | . | 2 | 4 | . | 28 | 6 | 4 | . | 2 | 10 | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | . | . | . | . | . | . | . | . | . | . | 24 | . | . | . | . | . | . | . | . | . | . | . | . | |||
| High Brown Fritillary | . | . | . | . | . | . | . | . | 28 | 40 | 50 | 24 | 22 | 22 | 12 | 10 | 6 | 4 | 8 | . | . | . | . | |||
| Speckled Wood | . | . | . | . | . | . | 2 | 6 | . | 32 | 2 | . | 2 | 4 | 2 | 2 | 8 | 14 | 8 | 58 | 54 | 90 | 60 | |||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||
| Scotch Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | |||
| Grayling | . | . | . | . | . | . | . | . | . | 4 | 14 | 4 | 2 | . | 6 | . | . | . | . | . | . | . | . | |||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 212 | 186 | 234 | 226 | 200 | 226 | 110 | 74 | 38 | 102 | 2 | 2 | 2 | . | |||
| Small Heath | . | . | . | . | . | . | . | . | 6 | . | 10 | . | . | . | . | . | 6 | . | . | . | . | . | . | |||
| Ringlet | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 14 | . | . | . | . | . | |||