
| 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 | 14 | . | . | . | . | . | . | . | . | . | . | 4 | 1 | 2 | 5 | 2 | . | . | . | . | . | . | |||||
| Large Skipper | 3 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 17 | . | 7 | 3 | 3 | 3 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 6 | . | 2 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Brimstone | 43 | . | . | 1 | . | 3 | . | . | . | . | . | . | . | 2 | 5 | 28 | 2 | . | . | . | 1 | . | |||||
| Large White | 65 | 2 | . | 1 | . | 1 | 1 | . | . | . | . | 1 | . | 12 | 22 | 4 | . | 2 | 6 | 5 | 7 | 1 | |||||
| Small White | 25 | 1 | . | . | . | . | 2 | . | . | . | . | . | . | 2 | 2 | . | 7 | 3 | 2 | 4 | 2 | . | |||||
| Green-veined White | 10 | . | . | 1 | . | 1 | . | . | . | . | . | . | 1 | . | 2 | 1 | . | . | 2 | . | 1 | . | |||||
| Orange Tip | 5 | 1 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brown Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | |||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | |||||
| Brown Argus | 11 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 7 | . | . | 1 | 1 | . | . | |||||
| Common Blue | 514 | . | . | . | 24 | 85 | 78 | 23 | 18 | 7 | . | . | . | 2 | 19 | 41 | 29 | 86 | 46 | 49 | 5 | . | |||||
| Holly Blue | 4 | . | 1 | . | . | 1 | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | |||||
| Duke of Burgundy Fritillary | 16 | 1 | 8 | 4 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 71 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | 1 | 1 | . | . | 5 | 4 | 17 | 26 | |||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Small Tortoiseshell | 7 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 2 | 2 | . | . | |||||
| Peacock | 56 | . | . | 1 | . | . | . | . | . | . | . | . | . | 10 | 39 | 4 | . | . | . | . | . | . | |||||
| Comma | 17 | . | . | . | . | . | . | . | . | . | 3 | 2 | . | 2 | . | . | . | . | . | 3 | 3 | 1 | |||||
| Silver-washed Fritillary | 28 | . | . | . | . | . | . | . | . | . | 1 | 5 | . | 3 | 7 | 7 | . | 3 | 2 | . | . | . | |||||
| Speckled Wood | 26 | 1 | 2 | . | 1 | . | . | 1 | 1 | . | . | . | . | . | 1 | . | 2 | 2 | 7 | 3 | . | . | |||||
| Marbled White | 180 | . | . | . | . | . | . | . | . | 44 | 48 | 61 | 17 | 10 | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 1024 | . | . | . | . | . | . | . | . | . | . | 7 | 181 | 418 | 241 | 112 | 45 | 16 | . | 1 | 3 | . | |||||
| Meadow Brown | 1653 | . | . | . | . | . | . | 1 | 10 | 71 | 66 | 127 | 211 | 392 | 259 | 151 | 51 | 176 | 51 | 63 | 17 | 6 | |||||
| Small Heath | 413 | . | 7 | 3 | 8 | 32 | 14 | 31 | 28 | 27 | 9 | 3 | 1 | . | 1 | 14 | 18 | 37 | 41 | 105 | 26 | 6 | |||||
| Ringlet | 131 | . | . | . | . | . | . | . | 1 | 35 | 41 | 25 | 10 | 7 | 6 | 3 | 3 | . | . | . | . | . | |||||