
| 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 | ||||||||||||||||||||||||||
| Small Skipper | 26 | . | . | . | . | . | . | . | . | . | . | . | 5 | 12 | 4 | 3 | . | . | . | . | . | ||||||
| Large Skipper | 35 | . | . | . | . | . | . | . | 2 | 3 | 9 | 9 | 6 | 5 | 1 | . | . | . | . | . | . | ||||||
| Dingy Skipper | 21 | . | . | . | 6 | . | 5 | 6 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | 5 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 2 | . | . | . | . | ||||||
| Brimstone | 113 | 1 | 9 | 6 | 20 | . | 8 | 6 | 2 | 1 | 2 | 2 | 2 | 5 | 6 | 8 | 6 | 1 | 4 | . | . | ||||||
| Large White | 14 | . | . | . | 1 | . | . | 1 | . | . | . | . | 2 | 3 | 1 | 3 | 1 | . | . | . | . | ||||||
| Small White | 26 | . | . | . | 1 | . | . | . | 3 | . | 1 | . | . | 1 | 2 | 3 | 5 | 4 | . | . | . | ||||||
| Green-veined White | 65 | . | 1 | . | 9 | . | 2 | 1 | . | . | . | . | 7 | 10 | 4 | 7 | 1 | 4 | 3 | . | 1 | ||||||
| Orange Tip | NI | . | 1 | 2 | 12 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 3 | . | . | . | 1 | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | 4 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | . | . | . | . | . | ||||||
| White-letter Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | 2 | ||||||
| Northern Brown Argus | 48 | . | . | . | . | . | . | . | 2 | 2 | 10 | 4 | 3 | 10 | 5 | 3 | 3 | 2 | . | . | . | ||||||
| Common Blue | 28 | . | . | . | . | . | . | 1 | . | . | 4 | 1 | 3 | 2 | 4 | 4 | 1 | 3 | . | . | . | ||||||
| Holly Blue | 4 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||||
| Duke of Burgundy Fritillary | NI | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 41 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 8 | 12 | 1 | . | 3 | 3 | 4 | ||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 7 | 3 | 2 | 1 | 1 | 1 | ||||||
| Small Tortoiseshell | 33 | . | . | . | . | . | . | . | . | . | 2 | 1 | 5 | 7 | 2 | 1 | 2 | . | 2 | 2 | 4 | ||||||
| Peacock | 260 | 3 | 30 | 14 | 20 | . | 7 | . | 1 | . | . | . | 1 | 6 | 41 | 58 | 9 | 3 | 1 | 1 | . | ||||||
| Comma | 31 | 1 | 3 | 1 | . | . | . | . | . | . | . | 1 | 1 | . | 2 | 5 | . | . | 2 | 3 | 5 | ||||||
| Small Pearl-bordered Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 28 | . | . | . | 5 | 3 | 6 | 13 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| High Brown Fritillary | 228 | . | . | . | . | . | . | . | . | . | 16 | 26 | 58 | 71 | 24 | 21 | 2 | . | . | . | . | ||||||
| Dark Green Fritillary | 19 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | 5 | 6 | 3 | 1 | . | . | . | . | ||||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 219 | . | 1 | 1 | 8 | . | 2 | . | . | 5 | 13 | 9 | 2 | 1 | . | 5 | 6 | 5 | 26 | 42 | 48 | ||||||
| Wall Brown | NI | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | 4 | 9 | 2 | . | . | ||||||
| Grayling | 66 | . | . | . | . | . | . | . | . | 1 | 8 | 7 | 19 | 19 | 3 | 4 | . | 1 | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Meadow Brown | 497 | . | . | . | . | . | . | . | . | 13 | 58 | 91 | 94 | 102 | 71 | 40 | 4 | 1 | . | . | . | ||||||