
| 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 | 303 | . | . | . | . | . | . | . | . | . | . | . | . | . | 12 | 24 | 77 | 68 | 37 | 28 | 6 | . | . | . | . | ||
| Large Skipper | 88 | . | . | . | . | . | . | . | . | . | 2 | 11 | 13 | 22 | 17 | 13 | 1 | 1 | 1 | . | . | . | . | . | . | ||
| Grizzled Skipper | 2 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Brimstone | 37 | 1 | 2 | 2 | 1 | 10 | 4 | 2 | . | 3 | 1 | 4 | 1 | . | . | . | 1 | . | . | 3 | 1 | . | . | . | . | ||
| Large White | 9 | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | 3 | . | 1 | ||
| Small White | 3 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | ||
| Green-veined White | 43 | . | . | . | . | 2 | 8 | 3 | 2 | 2 | . | 1 | . | 1 | 1 | . | 3 | 1 | 1 | 8 | 5 | 2 | 1 | . | . | ||
| Orange Tip | 13 | . | . | . | . | . | 7 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Purple Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | ||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | ||
| Common Blue | 34 | . | . | . | . | . | . | . | . | 3 | 3 | 14 | 3 | 5 | 2 | . | . | . | . | . | 2 | 1 | 1 | . | . | ||
| Small Tortoiseshell | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | ||
| Peacock | 33 | . | 3 | 8 | 6 | 5 | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 4 | . | . | 1 | ||
| Comma | 12 | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 1 | . | . | 1 | 1 | . | . | ||
| Small Pearl-bordered Fritillary | 16 | . | . | . | . | . | . | . | . | . | 2 | 2 | 5 | 4 | 3 | . | . | . | . | . | . | . | . | . | . | ||
| Pearl-bordered Fritillary | 86 | . | . | . | . | . | . | 1 | 5 | 30 | 25 | 18 | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | ||
| High Brown Fritillary | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | ||
| Silver-washed Fritillary | 40 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 12 | 5 | 3 | 6 | 1 | . | . | . | . | ||
| Speckled Wood | 31 | . | . | . | . | . | 1 | . | . | 1 | . | . | 2 | 1 | 4 | 3 | . | . | . | . | 4 | 5 | 2 | . | 6 | ||
| Gatekeeper / Hedge Brown | 221 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 46 | 28 | 47 | 48 | 22 | 3 | 4 | . | . | ||
| Meadow Brown | 109 | . | . | . | . | . | . | . | . | . | . | . | . | . | 9 | 5 | 19 | 21 | 21 | 17 | 4 | 1 | . | . | . | ||
| Small Heath | 3 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Ringlet | 365 | . | . | . | . | . | . | . | . | . | . | . | . | . | 63 | 88 | 67 | 48 | 18 | 3 | . | . | . | . | . | ||