
| 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 | 17 | . | . | . | . | . | . | . | 2 | 4 | . | 1 | 2 | 4 | 4 | . | . | . | . | . | . | ||||||
| Large Skipper | 36 | . | . | . | . | . | . | 2 | 5 | 4 | 9 | 4 | 3 | 4 | 2 | 1 | . | 2 | . | . | . | ||||||
| Dingy Skipper | 13 | . | . | 1 | 2 | 1 | 5 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 8 | . | 1 | . | 2 | 2 | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Wood White | 21 | . | . | . | . | . | 4 | 6 | 7 | 2 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||||
| Brimstone | 18 | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 3 | 1 | . | 1 | . | ||||||
| Large White | 47 | . | . | 1 | . | . | 1 | 3 | . | . | 2 | . | . | 5 | 4 | 14 | 6 | 1 | 4 | . | 1 | ||||||
| Small White | 50 | 1 | . | . | 3 | 9 | . | 3 | 2 | 1 | . | 2 | . | 9 | 5 | 2 | 1 | 11 | . | . | . | ||||||
| Green-veined White | 43 | . | . | 4 | 1 | . | 2 | . | . | . | . | . | 4 | 1 | 4 | 3 | 8 | 3 | 5 | 1 | . | ||||||
| Orange Tip | 6 | . | 1 | . | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 4 | . | . | . | . | 1 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Common Blue | 45 | . | 3 | . | . | 3 | 4 | 8 | 8 | 3 | 1 | 2 | . | . | . | 5 | 3 | 2 | 1 | . | . | ||||||
| Holly Blue | 10 | . | . | . | 3 | . | . | . | . | . | . | . | . | 1 | 1 | . | 1 | 3 | 1 | . | . | ||||||
| Red Admiral | 57 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | 1 | 1 | 4 | 1 | 5 | 11 | 5 | 8 | ||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | 1 | ||||||
| Small Tortoiseshell | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 2 | ||||||
| Peacock | 90 | 1 | . | . | . | . | . | 1 | . | . | . | . | . | 2 | 2 | 31 | 24 | 23 | 6 | . | . | ||||||
| Comma | 8 | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 2 | . | . | 4 | ||||||
| Small Pearl-bordered Fritillary | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 58 | . | . | . | . | . | . | . | . | . | 1 | 7 | 1 | 7 | 6 | 10 | 12 | 12 | 3 | . | . | ||||||
| Marsh Fritillary | 6 | . | . | . | . | 4 | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 350 | 2 | 6 | 4 | 11 | 13 | 29 | 8 | 9 | 5 | 6 | . | 2 | 7 | 7 | 16 | 25 | 17 | 55 | 25 | 8 | ||||||
| Marbled White | 84 | . | . | . | . | . | . | . | . | 6 | 29 | 24 | 6 | 14 | 4 | 1 | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 561 | . | . | . | . | . | . | . | . | . | . | 4 | 11 | 50 | 154 | 165 | 120 | 53 | 3 | . | 1 | ||||||
| Meadow Brown | 891 | . | . | . | . | . | . | 6 | 8 | 41 | 51 | 88 | 41 | 106 | 153 | 125 | 119 | 91 | 29 | 2 | . | ||||||
| Small Heath | 72 | . | . | . | 2 | 11 | 8 | 13 | 12 | 13 | 2 | 2 | . | . | . | . | . | . | . | . | . | ||||||
| Ringlet | 330 | . | . | . | . | . | . | 1 | . | 29 | 84 | 58 | 76 | 61 | 20 | 1 | . | . | . | . | . | ||||||