
| 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 | 71 | . | . | . | . | . | . | . | 1 | 1 | 2 | 15 | 14 | 17 | 3 | . | . | . | |||||||||
| Large Skipper | 65 | . | . | . | . | . | 5 | 6 | 10 | 13 | 16 | 2 | 4 | . | . | . | . | . | |||||||||
| Dingy Skipper | 26 | . | . | . | 2 | 15 | 3 | 3 | 3 | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 6 | . | . | 3 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Wood White | 9 | . | . | . | . | 2 | 2 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | |||||||||
| Large White | 3 | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | 1 | |||||||||
| Small White | 5 | . | . | 1 | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | . | . | |||||||||
| Green-veined White | 14 | 1 | 1 | 1 | 3 | . | 1 | 1 | . | 1 | . | . | . | . | 2 | 1 | . | . | |||||||||
| Orange Tip | 3 | . | 1 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 4 | . | . | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Small Copper | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 1 | |||||||||
| Brown Argus | 3 | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Common Blue | 66 | . | . | . | . | 5 | 11 | 7 | 6 | 8 | 5 | . | . | . | 4 | 7 | 5 | 1 | |||||||||
| Duke of Burgundy Fritillary | 2 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||||
| Small Tortoiseshell | 13 | 1 | 1 | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | 4 | 5 | |||||||||
| Peacock | 18 | 1 | 1 | . | 1 | . | . | . | . | . | . | . | . | 2 | 4 | 1 | 1 | 2 | |||||||||
| Small Pearl-bordered Fritillary | 9 | . | . | . | . | . | 1 | 2 | 5 | 1 | . | . | . | . | . | . | . | . | |||||||||
| Silver-washed Fritillary | 9 | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 2 | 1 | . | . | . | |||||||||
| Marsh Fritillary | 16 | . | . | . | . | 5 | 5 | 6 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | 22 | . | . | 2 | . | 1 | 2 | 1 | 3 | 1 | . | . | . | . | 2 | 5 | 1 | 3 | |||||||||
| Marbled White | 148 | . | . | . | . | . | . | . | . | 4 | 26 | 39 | 32 | 9 | 1 | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 219 | . | . | . | . | . | . | . | . | . | . | 27 | 46 | 37 | 28 | 14 | . | . | |||||||||
| Meadow Brown | 230 | . | . | . | . | . | . | . | 12 | 13 | 22 | 36 | 25 | 21 | 19 | 17 | . | . | |||||||||
| Small Heath | 13 | . | . | . | . | 2 | 4 | 1 | 2 | 1 | . | . | . | . | . | 2 | . | . | |||||||||
| Ringlet | 161 | . | . | . | . | . | . | . | 1 | 16 | 58 | 29 | 13 | 2 | . | . | . | . | |||||||||