
| 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 | 58 | 96 | 42 | 12 | . | 2 | . | . | . | . | . | . | |||
| Large Skipper | . | . | . | . | . | . | . | . | . | 4 | 6 | 6 | 6 | 4 | . | . | . | . | . | . | . | . | . | |||
| Dingy Skipper | . | . | . | . | 2 | 12 | 12 | 2 | 4 | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | |||
| Grizzled Skipper | . | . | 8 | 10 | 14 | 10 | 2 | 8 | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||
| Brimstone | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Large White | . | . | . | . | . | . | . | 4 | . | . | . | . | . | 2 | 6 | . | 4 | 4 | 6 | . | . | . | . | |||
| Small White | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 4 | 2 | . | 6 | . | 2 | . | 4 | 2 | |||
| Green-veined White | . | 2 | 8 | 20 | 10 | 6 | 4 | 8 | 2 | . | . | . | . | 12 | 20 | 26 | 20 | 36 | 2 | 2 | 6 | . | . | |||
| Orange Tip | . | . | 4 | 6 | 6 | 4 | 4 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||
| Small Copper | . | . | . | 2 | 8 | 6 | 4 | . | . | . | . | 6 | 6 | 4 | 12 | 12 | 10 | 12 | 6 | 14 | 16 | 26 | 20 | |||
| Brown Argus | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | 2 | 14 | 8 | 2 | 6 | 2 | 4 | . | . | |||
| Common Blue | . | . | . | . | . | 2 | 28 | 46 | 12 | 10 | 20 | 2 | 2 | 16 | 72 | 180 | 260 | 88 | 60 | 16 | 14 | . | 4 | |||
| Holly Blue | . | . | . | 2 | . | 2 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | 2 | . | 2 | 6 | . | 2 | 6 | 2 | 6 | |||
| Painted Lady | . | . | . | . | . | . | . | . | . | 4 | . | . | 4 | 4 | 10 | 6 | . | . | . | . | . | 2 | 6 | |||
| Small Tortoiseshell | . | 2 | 4 | 2 | . | . | . | . | . | 6 | 2 | . | . | . | 2 | 2 | . | . | . | . | . | . | . | |||
| Peacock | 2 | . | 2 | . | 6 | . | . | . | . | . | . | . | . | . | 8 | 2 | . | . | . | . | . | . | . | |||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 4 | 4 | 2 | 4 | |||
| Pearl-bordered Fritillary | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||
| Speckled Wood | 2 | . | . | . | . | . | 2 | 2 | 4 | 2 | . | . | . | . | 2 | . | . | 14 | 6 | . | 2 | 2 | . | |||
| Marbled White | . | . | . | . | . | . | . | . | . | 2 | 20 | 98 | 74 | 16 | 6 | . | . | . | . | . | . | . | . | |||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 2 | 8 | 86 | 130 | 114 | 108 | 14 | 2 | . | . | . | . | |||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 16 | 102 | 258 | 292 | 322 | 512 | 284 | 434 | 124 | 72 | 36 | 12 | 4 | 2 | |||
| Ringlet | . | . | . | . | . | . | . | . | . | . | . | 60 | 14 | 8 | . | . | . | . | . | . | . | . | . | |||