
| 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 | 124 | . | . | . | . | . | . | 1 | 2 | 28 | 26 | 11 | . | . | . | . | . | ||||||||||
| Silver-spotted Skipper | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||||||
| Large Skipper | 58 | . | . | . | . | . | . | 19 | 7 | 7 | . | . | . | . | . | . | . | ||||||||||
| Brimstone | 46 | 1 | . | 4 | 2 | 3 | . | 1 | . | 1 | 3 | 4 | 5 | 2 | . | . | . | ||||||||||
| Large White | 9 | . | . | 1 | . | . | . | . | . | . | 4 | . | 1 | . | . | 1 | . | ||||||||||
| Small White | 61 | . | . | 2 | . | . | . | . | . | 1 | 4 | 7 | 13 | 17 | 1 | . | . | ||||||||||
| Green-veined White | 8 | . | . | . | . | 1 | . | . | . | . | . | 3 | . | 3 | . | . | . | ||||||||||
| Purple Hairstreak | NI | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||||||||
| Small Copper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | ||||||||||
| Common Blue | 17 | . | . | . | . | . | . | . | . | . | . | 3 | 5 | 1 | 1 | . | . | ||||||||||
| White Admiral | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||||
| Small Tortoiseshell | 10 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | ||||||||||
| Peacock | 56 | 4 | . | 1 | . | . | . | . | . | . | 7 | 6 | 8 | . | . | . | . | ||||||||||
| Comma | 6 | . | 1 | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | ||||||||||
| Small Pearl-bordered Fritillary | 41 | . | . | . | 2 | 11 | 6 | . | . | . | . | . | . | . | . | . | . | ||||||||||
| Pearl-bordered Fritillary | 36 | . | . | 12 | 7 | 4 | 8 | . | . | . | . | . | . | . | . | . | . | ||||||||||
| Dark Green Fritillary | 7 | . | . | . | . | . | . | 1 | . | 4 | . | . | . | . | . | . | . | ||||||||||
| Silver-washed Fritillary | 34 | . | . | . | . | . | . | 2 | 1 | 7 | 8 | 4 | 1 | . | . | . | . | ||||||||||
| Marsh Fritillary | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||||
| Speckled Wood | 35 | . | 1 | . | 2 | . | 3 | 1 | 1 | . | 6 | 3 | 1 | 5 | . | . | . | ||||||||||
| Marbled White | 102 | . | . | . | . | . | . | 1 | 30 | 60 | 6 | . | . | . | . | . | . | ||||||||||
| Gatekeeper / Hedge Brown | 243 | . | . | . | . | . | . | . | . | . | 53 | 55 | 49 | 2 | . | . | . | ||||||||||
| Meadow Brown | 111 | . | . | . | . | . | . | 6 | 10 | 8 | 28 | 16 | 1 | 1 | . | . | . | ||||||||||
| Ringlet | 248 | . | . | . | . | . | . | 2 | 78 | 118 | 17 | 4 | . | . | . | . | . | ||||||||||