
| 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 | . | . | . | . | . | . | 2 | 18 | 14 | 10 | 14 | 4 | 6 | 2 | . | . | . | . | . | . | ||||||
| Dingy Skipper | . | . | . | . | 10 | 18 | 22 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 8 | 10 | 24 | 14 | 20 | 10 | 8 | 8 | 2 | 2 | 6 | . | 4 | 10 | 18 | 22 | 6 | 4 | . | . | ||||||
| Large White | . | . | . | . | . | 2 | 4 | . | . | . | . | . | 2 | . | . | . | . | . | . | . | ||||||
| Small White | . | 2 | . | . | . | 4 | 6 | . | . | . | . | 2 | 2 | 2 | . | 6 | . | . | . | 2 | ||||||
| Green-veined White | . | . | 2 | . | 4 | . | . | . | . | . | . | 4 | 6 | 10 | 8 | . | . | . | . | . | ||||||
| Orange Tip | . | . | 6 | 6 | 4 | 6 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | . | . | 4 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | . | . | . | 2 | . | . | . | . | . | 2 | 8 | . | . | 12 | 6 | 2 | 2 | . | ||||||
| Northern Brown Argus | . | . | . | . | . | . | 2 | 32 | 28 | 34 | 44 | 26 | 28 | 8 | 12 | 10 | 6 | . | . | . | ||||||
| Common Blue | . | . | . | . | 2 | . | . | 6 | 14 | 16 | 38 | 36 | 22 | 12 | 18 | 4 | 4 | 2 | . | . | ||||||
| Holly Blue | . | 8 | 4 | 4 | 6 | 6 | 4 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||
| Duke of Burgundy Fritillary | . | . | 4 | 12 | 34 | 28 | 16 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | . | . | . | 2 | . | ||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||||
| Small Tortoiseshell | 2 | 2 | 2 | . | . | . | . | . | . | 2 | 2 | 10 | 6 | 8 | 2 | . | 4 | 2 | . | 4 | ||||||
| Peacock | 24 | 26 | 22 | 10 | 2 | . | . | . | . | . | . | . | 4 | 52 | 170 | 28 | . | . | . | . | ||||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | ||||||
| Small Pearl-bordered Fritillary | . | . | . | . | . | . | 30 | 84 | 28 | 22 | 14 | 4 | 4 | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | . | . | . | 2 | 42 | 172 | 80 | 20 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| High Brown Fritillary | . | . | . | . | . | . | . | . | 2 | 126 | 144 | 104 | 80 | 52 | 48 | 28 | 2 | . | . | . | ||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | 12 | 2 | 22 | 18 | 14 | 12 | 6 | 2 | . | . | . | . | ||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | 6 | 4 | 26 | 6 | 10 | 4 | . | . | . | ||||||
| Speckled Wood | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | ||||||
| Wall Brown | . | . | . | . | 4 | 4 | 4 | . | . | . | . | . | . | . | . | 26 | 20 | 18 | . | . | ||||||
| Grayling | . | . | . | . | . | . | . | . | . | . | 2 | 10 | 16 | 14 | 10 | 6 | 6 | 2 | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | . | 32 | 40 | 80 | 168 | 134 | 108 | 74 | 6 | 2 | . | . | . | ||||||
| Small Heath | . | . | . | . | . | 50 | 54 | 98 | 62 | 78 | 130 | 106 | 72 | 52 | 20 | 16 | 6 | . | . | . | ||||||