
| 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 | ||||||||||||||||||||||||||
| Large Skipper | . | . | . | . | 4 | . | . | 28 | 4 | 16 | 2 | . | . | 2 | . | 4 | 2 | . | . | |||||||
| Dingy Skipper | . | . | 8 | 44 | 46 | 10 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 2 | |||||||
| Brimstone | 4 | 20 | 14 | . | 4 | 4 | 2 | 6 | . | . | 20 | . | . | 4 | 8 | 6 | 6 | . | 8 | |||||||
| Large White | . | . | 56 | 30 | 44 | 40 | 18 | 8 | 4 | 8 | 20 | 8 | 22 | 14 | 50 | 26 | 40 | 4 | . | |||||||
| Small White | 4 | . | . | . | . | . | 6 | . | . | . | 8 | . | 6 | . | 4 | . | 4 | 2 | 4 | |||||||
| Green-veined White | . | . | 20 | 16 | 12 | 4 | . | 16 | . | 2 | . | 8 | . | 16 | . | . | . | . | . | |||||||
| Orange Tip | . | 12 | 14 | 2 | 4 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | . | 16 | 38 | 46 | 20 | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | . | . | . | . | |||||||
| Northern Brown Argus | . | . | . | . | 2 | 28 | . | 128 | 100 | 130 | 52 | 36 | 4 | 2 | . | . | . | . | . | |||||||
| Common Blue | . | . | . | 18 | 18 | 20 | 10 | 26 | 4 | 12 | 10 | 2 | . | 14 | 24 | 32 | 16 | 2 | 2 | |||||||
| Holly Blue | . | 2 | . | 2 | . | . | . | . | . | . | . | . | . | 4 | 2 | 4 | 2 | . | 2 | |||||||
| Red Admiral | . | . | . | . | . | . | . | 2 | 4 | 4 | 2 | . | 2 | . | . | 4 | . | 16 | 4 | |||||||
| Painted Lady | . | . | . | . | . | . | . | . | 2 | . | . | 2 | . | . | 26 | . | 88 | 22 | 14 | |||||||
| Small Tortoiseshell | . | . | 2 | . | . | . | . | . | . | . | 2 | 10 | 4 | 10 | . | . | . | 20 | 8 | |||||||
| Peacock | 12 | 8 | 6 | . | . | . | . | 2 | . | . | . | . | . | 8 | 6 | 40 | 18 | 24 | 10 | |||||||
| Comma | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 6 | 6 | . | . | . | 10 | |||||||
| Small Pearl-bordered Fritillary | . | . | . | . | 8 | 2 | 12 | 16 | . | 2 | . | . | . | . | . | . | . | . | . | |||||||
| Pearl-bordered Fritillary | . | . | 10 | 16 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| High Brown Fritillary | . | . | . | . | . | . | . | . | 14 | 64 | 22 | 16 | 24 | 6 | 4 | 2 | . | 2 | . | |||||||
| Speckled Wood | . | 12 | 34 | 18 | 6 | 16 | 10 | 52 | 124 | 60 | 34 | 22 | 12 | 18 | 30 | 34 | 44 | 24 | 24 | |||||||
| Wall Brown | . | . | . | 20 | 16 | 12 | . | 4 | 16 | . | 32 | 2 | 20 | 2 | 32 | 22 | 38 | . | 4 | |||||||
| Grayling | . | . | . | . | . | . | . | . | . | 8 | 2 | 10 | 8 | 6 | 14 | . | 2 | . | . | |||||||
| Meadow Brown | . | . | . | . | . | . | 4 | 8 | 64 | 300 | 56 | 240 | 118 | 206 | 4 | . | 12 | 10 | 12 | |||||||
| Small Heath | . | . | . | 18 | 8 | 6 | 8 | 6 | 4 | . | 4 | . | . | . | . | . | . | . | . | |||||||