
| 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 | . | . | . | . | . | . | . | . | . | . | . | 11 | 10 | 23 | 27 | 18 | 5 | . | 1 | . | . | . | ||||
| Silver-spotted Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | ||||
| Large Skipper | 13 | . | . | . | . | . | . | . | . | . | 6 | 7 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 20 | . | . | . | 7 | 4 | 7 | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 39 | . | . | 1 | 12 | 10 | 8 | 5 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||
| Brimstone | 99 | 3 | 2 | 1 | 3 | 9 | 3 | 6 | 2 | 4 | 1 | 4 | . | . | 3 | 10 | 8 | 9 | 20 | . | 5 | . | 1 | ||||
| Large White | 16 | . | . | . | . | . | . | 1 | . | . | 3 | . | . | . | 2 | 1 | 1 | 3 | 3 | 2 | . | . | . | ||||
| Small White | 22 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 7 | 3 | 7 | 1 | 1 | . | . | ||||
| Orange Tip | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 9 | . | . | 1 | 5 | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 1 | . | . | . | ||||
| Small Blue | 15 | . | . | . | . | 2 | . | 10 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brown Argus | 5 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | ||||
| Common Blue | 129 | . | . | . | . | . | 3 | 16 | 7 | 8 | 12 | 7 | . | . | . | . | 4 | 12 | 25 | 7 | 18 | . | . | ||||
| Chalk-hill Blue | 104 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 5 | 8 | 10 | 27 | 25 | 15 | 8 | . | . | ||||
| Adonis Blue | 19 | . | . | . | . | . | 1 | 2 | 8 | 2 | 1 | . | . | . | . | . | . | . | . | 2 | 2 | . | . | ||||
| Duke of Burgundy Fritillary | 2 | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | ||||
| Peacock | 20 | 2 | 1 | 1 | . | 1 | . | 1 | 1 | . | . | . | . | 1 | . | 6 | 4 | . | . | . | . | . | . | ||||
| Dark Green Fritillary | 64 | . | . | . | . | . | . | . | . | . | . | 5 | 15 | 17 | 7 | 11 | 5 | 3 | 1 | . | . | . | . | ||||
| Marsh Fritillary | 2 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | ||||
| Marbled White | 151 | . | . | . | . | . | . | . | . | . | 12 | 38 | 75 | 17 | 9 | . | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 82 | . | . | . | . | . | . | . | . | . | . | . | 13 | 10 | 15 | 21 | 10 | 9 | 4 | . | . | . | . | ||||
| Meadow Brown | 1290 | . | . | . | . | . | . | . | 1 | . | 14 | 42 | 19 | 22 | 35 | 88 | 121 | 164 | 241 | 210 | 185 | 24 | 19 | ||||
| Small Heath | 303 | . | . | . | . | . | 5 | 14 | 23 | 19 | 46 | 71 | 47 | 15 | 12 | 16 | 1 | 5 | 3 | 14 | 5 | 2 | 1 | ||||
| Ringlet | 57 | . | . | . | . | . | . | . | . | . | 1 | 19 | 27 | 5 | 4 | 1 | . | . | . | . | . | . | . | ||||