
| 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 | 25 | . | . | . | . | . | . | . | . | . | . | . | 8 | . | 3 | 1 | 3 | 4 | . | . | . | . | . | ||||
| Large Skipper | 25 | . | . | . | . | . | . | . | 4 | 9 | 4 | 1 | 3 | . | . | 1 | . | . | . | . | . | . | . | ||||
| Clouded Yellow | 17 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 10 | 1 | 2 | 1 | ||||
| Brimstone | 30 | . | 4 | . | 2 | 2 | 3 | 1 | . | . | . | . | . | . | 3 | 7 | 2 | 1 | . | 1 | . | . | . | ||||
| Large White | 20 | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | 2 | 1 | 6 | 1 | 1 | 2 | . | . | . | ||||
| Small White | 15 | . | . | . | . | . | 2 | . | . | . | . | . | . | . | 1 | 1 | 2 | 9 | . | . | . | . | . | ||||
| Green-veined White | 20 | . | . | . | . | . | 3 | . | 1 | . | . | 2 | 1 | . | 2 | 1 | . | . | . | 1 | . | . | . | ||||
| Orange Tip | 10 | . | . | . | . | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| White-letter Hairstreak | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | . | . | . | ||||
| Small Copper | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | ||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | ||||
| Common Blue | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | . | . | ||||
| Duke of Burgundy Fritillary | 21 | . | . | . | 1 | 2 | 11 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 3 | . | 3 | 4 | ||||
| Painted Lady | 15 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 6 | . | 5 | 1 | . | 1 | ||||
| Small Tortoiseshell | 14 | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | 4 | 3 | . | . | 4 | . | 1 | ||||
| Peacock | 130 | . | 5 | . | 2 | 6 | 4 | . | . | . | . | . | 1 | . | 19 | 40 | 15 | 21 | . | 1 | . | . | . | ||||
| Comma | 25 | . | 1 | . | 1 | 8 | 1 | . | . | . | . | 3 | . | . | 1 | . | . | . | . | 2 | . | 7 | . | ||||
| Silver-washed Fritillary | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 2 | 4 | . | 1 | . | . | . | ||||
| Speckled Wood | 37 | . | . | . | 1 | . | 1 | 1 | 1 | 1 | 2 | . | . | . | . | 1 | 2 | 1 | 1 | 9 | . | 4 | . | ||||
| Marbled White | 141 | . | . | . | . | . | . | . | . | . | 25 | 28 | 49 | . | 4 | 5 | 3 | 1 | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 219 | . | . | . | . | . | . | . | . | . | . | 7 | 31 | . | 52 | 33 | 39 | 15 | . | . | . | . | . | ||||
| Meadow Brown | 132 | . | . | . | . | . | . | . | 1 | 2 | 7 | 4 | 12 | . | 20 | 7 | 34 | 12 | 6 | 4 | 5 | 1 | 1 | ||||
| Ringlet | 303 | . | . | . | . | . | . | . | . | 87 | 102 | 45 | 37 | . | 6 | 4 | . | . | . | . | . | . | . | ||||