
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | . | . | 1 | 9 | 5 | 21 | 23 | 6 | 2 | . | 1 | . | . | . | |||||
| Silver-spotted Skipper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 10 | 16 | 4 | . | 5 | |||||
| Large Skipper | . | . | . | . | . | 1 | . | 7 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | . | . | . | 3 | 10 | 5 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | . | . | . | 8 | 13 | 7 | 3 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 4 | . | 1 | . | . | . | 1 | |||||
| Brimstone | 1 | 2 | 9 | 11 | 9 | 10 | 9 | 8 | 5 | 1 | . | . | . | 9 | 23 | 20 | 8 | 9 | 2 | 10 | 16 | |||||
| Large White | . | . | . | 2 | 3 | 2 | 5 | 3 | . | 1 | 1 | 4 | 11 | 16 | 30 | 36 | 15 | 6 | . | 2 | . | |||||
| Small White | . | . | . | . | . | . | 1 | . | 1 | . | 1 | 5 | 3 | 9 | 25 | 22 | 7 | 4 | 1 | 2 | . | |||||
| Green-veined White | . | . | . | 1 | 3 | 2 | 1 | 3 | . | . | . | . | 2 | 6 | 11 | . | 3 | 3 | . | . | . | |||||
| Orange Tip | . | . | 2 | 4 | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | . | . | . | 6 | 5 | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | 4 | 2 | 1 | 2 | 1 | . | . | . | . | 3 | 6 | 4 | 2 | 3 | 1 | 1 | 3 | 5 | |||||
| Brown Argus | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | 2 | 1 | . | . | . | 1 | |||||
| Common Blue | . | . | . | 1 | 14 | 70 | 53 | 62 | 17 | 8 | . | . | . | 7 | 18 | 95 | 35 | 59 | 9 | 8 | 6 | |||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | 2 | 25 | 239 | 504 | 803 | 376 | 222 | 18 | . | 20 | |||||
| Adonis Blue | . | . | . | . | . | 8 | 19 | 49 | 14 | 3 | . | . | . | . | . | . | . | 15 | 26 | 25 | 20 | |||||
| Holly Blue | . | . | 2 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Duke of Burgundy Fritillary | . | . | . | 3 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | . | . | . | 1 | . | 2 | . | . | . | . | . | 4 | 8 | 7 | 5 | 3 | 2 | . | 1 | 2 | 2 | |||||
| Painted Lady | . | . | . | 1 | . | 1 | 1 | . | 1 | . | 16 | 3 | 3 | 3 | 1 | . | 1 | . | 1 | . | . | |||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | 3 | 2 | 4 | 6 | 8 | 2 | 1 | 1 | 1 | 9 | 9 | 13 | 11 | |||||
| Peacock | 8 | 6 | 6 | 1 | . | . | 1 | . | . | . | . | 2 | 19 | 23 | 13 | 5 | 3 | . | . | 1 | . | |||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | 1 | |||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | |||||
| Speckled Wood | . | 1 | 3 | 8 | 2 | 8 | 10 | 11 | 8 | 3 | . | . | . | 1 | 5 | 1 | 3 | 13 | 2 | 7 | 11 | |||||
| Wall Brown | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 2 | . | 3 | 2 | . | . | . | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | 51 | 77 | 58 | 43 | 13 | 6 | . | . | . | . | . | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | 1 | 24 | 47 | 90 | 65 | 10 | 15 | 2 | 1 | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | 6 | 57 | 51 | 89 | 79 | 80 | 133 | 345 | 656 | 1131 | 660 | 608 | 177 | 59 | 138 | |||||
| Small Heath | . | . | . | . | 13 | 38 | 30 | 66 | 64 | 55 | 17 | 2 | 4 | 4 | 1 | 2 | 8 | 15 | 5 | . | 1 | |||||
| Ringlet | . | . | . | . | . | . | . | . | 1 | 16 | 19 | 11 | 16 | . | 2 | . | . | . | . | . | . | |||||