
| 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 | 70 | . | . | . | . | . | . | . | . | 1 | 7 | 10 | . | 6 | 28 | . | 15 | 1 | 2 | . | . | . | . | . | . | ||
| Large Skipper | 36 | . | . | . | . | . | . | . | 2 | . | 4 | 5 | 9 | 7 | 1 | 5 | . | . | 3 | . | . | . | . | . | . | ||
| Dingy Skipper | 16 | . | . | . | . | . | . | 13 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Grizzled Skipper | 9 | . | . | . | . | 2 | . | 2 | 3 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Wood White | 16 | . | . | . | . | . | . | 1 | 2 | 5 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | ||
| Brimstone | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | . | . | . | . | . | ||
| Large White | 33 | . | . | . | . | . | . | . | . | 5 | . | . | . | . | . | 8 | 2 | 7 | 5 | . | 1 | 1 | 1 | 1 | . | ||
| Small White | 21 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 4 | . | 5 | 5 | 1 | 4 | 1 | . | . | . | . | ||
| Green-veined White | 41 | . | . | . | . | . | 2 | 1 | 2 | . | 1 | . | . | . | 2 | 6 | 2 | 2 | 14 | 1 | 2 | 3 | 1 | 1 | . | ||
| Orange Tip | 5 | . | 1 | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Green Hairstreak | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||
| Small Copper | 30 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 5 | 1 | 5 | 7 | . | 3 | 6 | 2 | ||
| Brown Argus | 5 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 2 | 1 | . | 1 | . | . | . | . | . | ||
| Common Blue | 124 | . | . | . | . | . | 1 | 2 | 11 | 14 | 1 | 1 | 5 | . | . | 2 | 6 | 19 | 33 | 11 | 6 | 4 | . | . | . | ||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||
| Duke of Burgundy Fritillary | 6 | . | . | . | . | . | . | 3 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Red Admiral | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | 1 | 1 | . | 1 | 1 | . | 2 | 2 | ||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | ||
| Small Tortoiseshell | 73 | 1 | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 1 | 1 | 1 | 13 | 32 | 9 | 5 | 3 | 1 | . | . | ||
| Peacock | 36 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 4 | 4 | 3 | 3 | 5 | 2 | 1 | 3 | 2 | ||
| Small Pearl-bordered Fritillary | 55 | . | . | . | . | . | . | 2 | 11 | 16 | 13 | 11 | 3 | . | . | . | . | . | . | 1 | . | . | . | . | . | ||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | ||
| Silver-washed Fritillary | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | . | . | . | . | . | . | . | ||
| Marsh Fritillary | 22 | . | . | . | . | . | . | 3 | 16 | 1 | 2 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||
| Speckled Wood | 69 | . | . | . | . | . | . | . | 4 | . | 6 | 2 | 1 | . | . | . | . | 2 | 7 | 5 | 4 | 20 | 3 | 1 | 3 | ||
| Wall Brown | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | ||
| Marbled White | 86 | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 23 | 23 | 11 | 3 | 3 | . | . | . | . | . | . | ||
| Gatekeeper / Hedge Brown | 121 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 7 | 28 | 26 | 30 | 22 | 4 | 2 | . | . | . | . | ||
| Meadow Brown | 277 | . | . | . | . | . | . | . | . | 1 | 2 | 14 | 101 | 34 | 29 | 51 | 16 | 19 | 6 | 2 | 2 | . | . | . | . | ||
| Small Heath | 124 | . | . | . | . | . | . | 3 | 26 | 27 | 13 | 14 | 18 | 4 | 4 | . | . | 2 | . | 6 | 5 | . | 1 | . | . | ||
| Ringlet | 153 | . | . | . | . | . | . | . | . | . | . | 1 | 54 | 37 | 33 | 17 | 6 | . | 3 | . | . | . | . | . | . | ||