
| 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 | 11 | . | . | . | . | . | . | . | . | . | . | 3 | . | 4 | . | . | . | . | . | ||||||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | 1 | . | . | 3 | 2 | . | . | . | . | . | ||||||||
| Dingy Skipper | 7 | . | . | . | . | . | 1 | . | 3 | 2 | . | . | . | . | . | . | . | . | . | ||||||||
| Grizzled Skipper | 3 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Clouded Yellow | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | 6 | 1 | . | . | 2 | ||||||||
| Brimstone | 138 | 13 | 14 | 19 | 19 | 7 | 8 | 7 | 1 | . | 1 | . | 1 | 2 | 3 | . | . | . | 7 | ||||||||
| Large White | 38 | . | . | . | 1 | . | 5 | 1 | 1 | 1 | 1 | 7 | 3 | 1 | 4 | . | . | 2 | . | ||||||||
| Small White | 39 | . | . | . | 6 | 1 | 1 | 1 | 2 | . | . | 4 | 4 | . | . | . | 2 | 3 | 2 | ||||||||
| Green-veined White | 43 | . | . | . | 2 | 1 | 1 | 3 | . | . | . | 6 | 2 | 5 | . | . | 5 | 3 | . | ||||||||
| Orange Tip | 17 | . | . | . | 8 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | 2 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brown Argus | NI | . | . | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | . | . | 1 | 2 | ||||||||
| Common Blue | 53 | . | . | . | . | . | . | . | 10 | 2 | 11 | . | . | 4 | 2 | 2 | . | . | . | ||||||||
| Holly Blue | NI | . | . | . | 1 | . | 1 | . | . | . | . | 1 | . | . | 6 | . | . | . | . | ||||||||
| Red Admiral | NI | . | . | . | . | . | . | . | 1 | 1 | . | 3 | 2 | 1 | 2 | . | . | 3 | 7 | ||||||||
| Painted Lady | 7 | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | 1 | 1 | . | . | . | . | ||||||||
| Small Tortoiseshell | 9 | 3 | 1 | 1 | . | 2 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||||
| Peacock | 20 | . | . | 3 | 4 | 1 | . | 1 | 2 | . | . | . | 2 | 1 | . | . | . | . | . | ||||||||
| Comma | 18 | . | . | 2 | 1 | . | . | . | . | . | . | 1 | . | 3 | . | . | . | 1 | 3 | ||||||||
| Silver-washed Fritillary | 126 | . | . | . | . | . | . | . | . | . | . | 33 | 17 | 25 | 12 | . | . | . | . | ||||||||
| Speckled Wood | NI | . | . | . | 4 | 1 | 2 | . | 10 | 5 | 6 | 2 | 2 | 3 | . | 2 | 3 | 17 | 7 | ||||||||
| Marbled White | 235 | . | . | . | . | . | . | . | . | . | 2 | 66 | 70 | 36 | 2 | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 372 | . | . | . | . | . | . | . | . | . | . | 99 | 67 | 36 | 47 | 2 | 9 | . | . | ||||||||
| Meadow Brown | 426 | . | . | . | . | . | . | . | . | 9 | 18 | 72 | 95 | 72 | 18 | 21 | 4 | 2 | . | ||||||||
| Small Heath | 67 | . | . | . | . | 1 | . | 1 | 7 | 12 | 20 | . | . | . | . | . | . | 2 | . | ||||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | 107 | 18 | 15 | 3 | . | . | . | . | ||||||||