
| 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 | 61 | . | . | . | . | . | . | . | . | . | . | 14 | 39 | 3 | 2 | 3 | . | . | |||||||||
| Large Skipper | 7 | . | . | . | . | . | . | 1 | 5 | . | . | . | 1 | . | . | . | . | . | |||||||||
| Dingy Skipper | 26 | . | . | 2 | 4 | 14 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 54 | . | 4 | 12 | 8 | 6 | 5 | 4 | 3 | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 2 | |||||||||
| Brimstone | 6 | 1 | . | . | 1 | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Large White | 80 | . | . | 1 | 3 | . | 2 | . | 1 | . | . | 2 | 3 | . | 55 | 7 | 2 | 2 | |||||||||
| Small White | 122 | . | . | 1 | . | . | . | 3 | . | . | . | . | 3 | 17 | 53 | 30 | 5 | 9 | |||||||||
| Green-veined White | 4 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | . | |||||||||
| Green Hairstreak | 3 | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 15 | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | 6 | 1 | 4 | |||||||||
| Brown Argus | 24 | . | . | . | 1 | 2 | . | 3 | 3 | . | . | . | . | 5 | 1 | . | 5 | 3 | |||||||||
| Common Blue | 205 | . | . | . | . | 8 | 23 | 26 | 22 | 6 | . | . | . | 6 | 20 | 39 | 44 | 11 | |||||||||
| Chalk-hill Blue | 35 | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 3 | 11 | 14 | 1 | . | |||||||||
| Adonis Blue | 22 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | 12 | 8 | |||||||||
| Red Admiral | 7 | . | . | 1 | . | . | . | . | . | . | . | 2 | . | 2 | . | 1 | . | . | |||||||||
| Painted Lady | 26 | . | . | . | . | . | . | . | . | . | . | . | 2 | 11 | 4 | 4 | 3 | 2 | |||||||||
| Small Tortoiseshell | 111 | . | . | . | 1 | . | . | . | . | . | 1 | 3 | 3 | 2 | 1 | 9 | 43 | 47 | |||||||||
| Peacock | 31 | 1 | . | . | . | . | . | . | 1 | . | . | . | 1 | 11 | 7 | 9 | . | . | |||||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Marsh Fritillary | 234 | . | . | . | 51 | 45 | 52 | 37 | 23 | . | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 5 | |||||||||
| Wall Brown | 17 | . | . | . | . | 3 | . | . | 1 | . | . | . | . | 1 | . | 4 | 8 | . | |||||||||
| Marbled White | 233 | . | . | . | . | . | . | . | . | 15 | 24 | 77 | 109 | 5 | 2 | 1 | . | . | |||||||||
| Gatekeeper / Hedge Brown | 231 | . | . | . | . | . | . | . | . | . | . | 87 | 71 | 20 | 30 | 22 | 1 | . | |||||||||
| Meadow Brown | 1329 | . | . | . | . | . | . | . | 22 | 10 | 25 | 153 | 180 | 113 | 466 | 242 | 100 | 18 | |||||||||
| Small Heath | 424 | . | . | . | 8 | 18 | 28 | 18 | 79 | 39 | 35 | 41 | 72 | 4 | 1 | 16 | 43 | 18 | |||||||||
| Ringlet | 3 | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | |||||||||