
| 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 | . | . | . | . | . | . | . | . | . | 4 | . | 2 | 12 | 30 | 48 | 10 | 38 | 14 | . | . | . | . | . | |||
| Large Skipper | . | . | . | . | . | . | . | . | 10 | 26 | 10 | 32 | 8 | 4 | 4 | 2 | . | . | . | . | . | . | . | |||
| Dingy Skipper | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Grizzled Skipper | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | |||
| Brimstone | 34 | 20 | 14 | 10 | 22 | 12 | 4 | 14 | 12 | 10 | . | 2 | . | . | 4 | 26 | 8 | 26 | 12 | 2 | 2 | . | 14 | |||
| Large White | . | . | . | . | . | . | . | . | . | 2 | . | 2 | 2 | 14 | 8 | 4 | 12 | 16 | . | . | 8 | . | . | |||
| Small White | . | . | . | . | . | 2 | . | . | . | 4 | . | 4 | 6 | 8 | 24 | 50 | 10 | 28 | 18 | . | 4 | . | . | |||
| Green-veined White | . | . | 2 | . | 6 | 2 | 12 | 6 | 2 | . | 2 | . | . | 16 | . | 24 | 22 | 16 | 10 | 10 | 10 | . | . | |||
| Orange Tip | . | . | . | 10 | 8 | 26 | . | 16 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Green Hairstreak | . | . | . | . | 4 | 4 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brown Argus | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | 4 | . | . | 2 | . | . | . | |||
| Common Blue | . | . | . | . | . | . | . | 2 | 2 | 4 | . | . | . | . | . | . | . | 4 | 2 | 6 | . | . | . | |||
| Holly Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||
| White Admiral | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 6 | . | . | . | . | . | . | . | . | . | |||
| Red Admiral | . | . | . | . | . | . | . | 2 | 4 | 4 | . | 2 | 2 | 10 | 2 | 6 | 10 | 14 | 20 | 6 | 6 | 2 | 2 | |||
| Painted Lady | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 2 | . | 2 | 2 | 2 | . | . | . | |||
| Small Tortoiseshell | . | 2 | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | 4 | . | . | . | . | |||
| Peacock | 20 | 26 | 6 | 16 | 16 | 8 | . | 4 | 4 | 2 | . | 2 | . | . | 6 | 30 | 172 | 44 | 40 | . | . | . | . | |||
| Comma | 12 | 8 | 2 | . | 2 | . | . | . | 2 | . | . | 4 | . | 8 | 4 | . | . | 8 | 12 | 2 | . | 2 | 2 | |||
| Pearl-bordered Fritillary | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | 6 | . | . | 4 | . | . | . | . | . | . | . | |||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | 8 | . | 32 | 12 | 24 | 58 | 48 | 34 | 2 | . | . | . | |||
| Speckled Wood | . | . | . | 2 | . | 6 | 12 | 6 | 4 | 12 | 6 | 4 | 4 | . | . | 2 | 8 | 12 | 32 | 36 | 18 | 10 | 2 | |||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | |||
| Marbled White | . | . | . | . | . | . | . | . | . | . | 8 | 44 | 36 | 42 | 26 | 6 | 4 | . | 2 | . | . | . | . | |||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 22 | 18 | 32 | 40 | 26 | 14 | . | . | . | . | |||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 6 | 18 | 20 | 60 | 88 | 50 | 64 | 72 | 86 | 46 | 2 | 4 | . | . | |||
| Ringlet | . | . | . | . | . | . | . | . | . | . | 36 | 152 | 234 | 274 | 68 | 52 | 20 | . | . | . | . | . | . | |||