
| 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 | NI | . | . | . | . | . | . | . | . | 2 | 8 | 12 | 9 | 13 | 10 | 1 | . | . | . | . | . | ||||||
| Large Skipper | 24 | . | . | . | . | . | . | . | 3 | 5 | 5 | 4 | 1 | 1 | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 43 | . | . | 5 | 7 | 3 | 7 | 5 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 24 | 5 | 4 | 2 | 1 | 1 | . | . | . | . | . | . | . | . | 1 | 1 | 2 | 2 | . | . | . | ||||||
| Large White | 34 | . | . | 1 | 1 | 3 | 1 | . | 1 | . | . | . | 3 | 7 | 3 | 4 | 1 | 1 | 1 | 1 | . | ||||||
| Small White | 29 | 1 | 2 | 1 | 1 | 1 | . | . | . | . | . | 3 | 3 | 7 | 3 | 2 | . | . | . | 1 | . | ||||||
| Green-veined White | 71 | . | . | 4 | 4 | 4 | 3 | . | 2 | 1 | . | . | 7 | 6 | 8 | 6 | 4 | 4 | 3 | 1 | . | ||||||
| Orange Tip | 21 | 2 | 5 | 2 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | 10 | . | . | . | . | . | . | . | . | . | 1 | 3 | 2 | 1 | 1 | . | 1 | . | . | . | . | ||||||
| Small Copper | 11 | . | . | . | . | . | 3 | 2 | . | . | . | . | . | 1 | 3 | 1 | . | . | . | . | . | ||||||
| Brown Argus | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Common Blue | 16 | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | 6 | 3 | 1 | . | . | . | . | ||||||
| Holly Blue | 8 | 1 | . | 1 | . | 1 | 1 | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | ||||||
| Duke of Burgundy Fritillary | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| White Admiral | 17 | . | . | . | . | . | . | . | . | 2 | 4 | 4 | 2 | 1 | 1 | . | . | . | . | . | . | ||||||
| Red Admiral | 13 | . | . | . | . | . | . | 1 | . | . | . | . | 1 | 2 | . | . | 2 | 2 | 1 | . | . | ||||||
| Small Tortoiseshell | 71 | 3 | 4 | . | . | . | . | . | 16 | 12 | 6 | 3 | . | . | . | . | 2 | 2 | 1 | . | . | ||||||
| Peacock | 132 | 17 | 16 | 8 | 12 | 4 | 2 | . | . | . | . | . | 3 | 7 | 11 | 20 | 6 | 4 | . | . | . | ||||||
| Comma | 57 | 7 | 3 | . | 1 | . | . | . | . | 3 | 7 | 8 | 2 | . | 2 | . | . | . | 2 | 5 | 3 | ||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 81 | . | . | . | . | . | . | . | 2 | 4 | 8 | 10 | 11 | 15 | 8 | 7 | 5 | 3 | . | . | . | ||||||
| Marsh Fritillary | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 51 | 1 | 2 | 2 | 1 | 1 | . | 4 | 2 | 3 | 1 | . | 1 | 1 | 2 | 3 | 7 | 5 | 2 | . | 1 | ||||||
| Marbled White | 34 | . | . | . | . | . | . | . | 1 | 3 | 7 | 9 | 7 | 1 | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 282 | . | . | . | . | . | . | . | . | . | . | 1 | 28 | 78 | 74 | 47 | 27 | 18 | . | . | . | ||||||
| Meadow Brown | 327 | . | . | . | . | . | . | . | 11 | 11 | 36 | 48 | 96 | 59 | 27 | 8 | 1 | . | . | . | . | ||||||
| Small Heath | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Ringlet | 131 | . | . | . | . | . | . | . | 6 | 13 | 29 | 36 | 21 | 2 | . | . | . | . | . | . | . | ||||||