
| 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 | . | . | . | . | . | . | . | . | . | 188 | 219 | 145 | 70 | 15 | . | 1 | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | 7 | 5 | 34 | 69 | 39 | 12 | 7 | 1 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | . | 3 | . | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | . | 1 | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Pale Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | 3 | 9 | 12 | 18 | 1 | 6 | . | 2 | . | 3 | ||||||
| Brimstone | 6 | 37 | 30 | 15 | 9 | 11 | 5 | 7 | 5 | 2 | 11 | 25 | 15 | 23 | 3 | 2 | . | . | . | 4 | ||||||
| Large White | . | . | 3 | 3 | 1 | 4 | 2 | 1 | . | 4 | 9 | 5 | 4 | 15 | 4 | 2 | . | . | . | . | ||||||
| Small White | . | . | 3 | . | 6 | 1 | 4 | . | . | 2 | 13 | 50 | 49 | 61 | 24 | 28 | 7 | 9 | 6 | 5 | ||||||
| Green-veined White | . | . | 2 | . | 2 | . | . | . | . | . | 5 | 2 | . | 4 | . | . | . | . | . | . | ||||||
| Orange Tip | . | 6 | 3 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | . | . | 2 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | ||||||
| Small Copper | . | 14 | 6 | 3 | 7 | 4 | 2 | 1 | . | 6 | 4 | 15 | 19 | 4 | 13 | 6 | 4 | 3 | 3 | 8 | ||||||
| Brown Argus | . | . | . | 1 | 2 | 2 | 2 | 1 | . | . | . | 1 | 2 | 3 | 16 | 7 | 2 | . | . | . | ||||||
| Common Blue | . | . | . | 2 | 18 | 7 | 3 | 1 | 2 | 1 | 10 | 42 | 32 | 99 | 53 | 29 | 1 | 1 | . | . | ||||||
| Holly Blue | . | . | 1 | . | 1 | . | . | . | . | . | 2 | 1 | 5 | . | . | . | . | . | . | . | ||||||
| White Admiral | . | . | . | . | . | . | . | . | . | 3 | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | . | . | . | 2 | . | . | . | . | 2 | 1 | 2 | 6 | 1 | . | . | . | 2 | 1 | 1 | 2 | ||||||
| Painted Lady | . | . | . | . | . | 1 | . | . | . | . | 1 | 3 | 2 | . | . | . | 1 | . | . | . | ||||||
| Small Tortoiseshell | . | . | . | 1 | . | 1 | . | . | . | 3 | . | . | . | . | 3 | 5 | 5 | 2 | . | 2 | ||||||
| Peacock | . | 2 | . | 1 | . | . | . | 1 | . | . | 4 | 14 | 11 | 2 | 4 | 1 | . | . | . | 4 | ||||||
| Comma | 5 | . | 1 | 1 | 1 | . | . | . | . | 6 | 2 | 5 | 1 | 1 | . | 2 | . | . | 1 | 2 | ||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | 1 | 3 | 3 | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | . | 4 | . | 1 | 2 | 9 | 5 | 9 | 8 | 5 | 1 | 6 | 5 | 7 | 13 | 30 | 28 | 15 | 5 | 7 | ||||||
| Wall Brown | . | 2 | 2 | 8 | 10 | 1 | 2 | . | . | . | . | . | 11 | 35 | 22 | 9 | 1 | . | . | . | ||||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 141 | 308 | 183 | 177 | 62 | 16 | 12 | . | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | 2 | 7 | 48 | 91 | 289 | 411 | 450 | 473 | 320 | 217 | 175 | 42 | 19 | 5 | 2 | ||||||
| Small Heath | . | 2 | 3 | 13 | 23 | 29 | 19 | 59 | 48 | 59 | 7 | 10 | 2 | 7 | 22 | 36 | 14 | 5 | 1 | 1 | ||||||
| Ringlet | . | . | . | . | . | . | . | 4 | 58 | 149 | 108 | 53 | 21 | 10 | . | . | . | . | . | . | ||||||