
| 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 | ||||||||||||||||||||||||||
| Small/Essex Skipper | . | . | . | . | . | . | . | . | . | 51 | 30 | 19 | . | . | . | . | . | . | . | |||||||
| Small Skipper | . | . | . | . | . | . | . | . | 7 | 22 | 13 | 8 | 4 | 6 | . | . | . | . | . | |||||||
| Essex Skipper | . | . | . | . | . | . | . | . | . | . | 3 | . | . | 1 | . | . | . | . | . | |||||||
| Large Skipper | . | . | . | . | . | . | . | 4 | 6 | 3 | . | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | . | . | 4 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | . | 3 | 2 | 1 | 2 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | 4 | 2 | 6 | 2 | 4 | . | . | 1 | |||||||
| Brimstone | 1 | 3 | 10 | 4 | 7 | . | 1 | . | . | . | 2 | 2 | 3 | 17 | . | 1 | . | . | 3 | |||||||
| Large White | . | . | . | . | 1 | . | . | . | . | . | . | 2 | 1 | 3 | 1 | . | . | . | 1 | |||||||
| Small White | . | . | . | . | . | 2 | 1 | . | . | . | 5 | 1 | 6 | 3 | 7 | 2 | 1 | . | . | |||||||
| Green-veined White | . | . | . | 1 | 1 | . | 1 | . | . | . | . | . | 1 | . | . | . | 1 | . | . | |||||||
| Orange Tip | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | . | . | . | 1 | . | . | . | . | 1 | . | . | . | 2 | . | . | 1 | . | . | . | |||||||
| Small Blue | . | . | . | . | 2 | 2 | . | 2 | . | . | 1 | . | . | 1 | . | . | . | . | . | |||||||
| Brown Argus | . | . | . | . | 1 | 2 | 1 | 1 | 1 | 1 | 1 | . | 5 | 2 | 5 | 6 | . | . | . | |||||||
| Common Blue | . | . | . | . | 9 | 21 | 11 | 10 | 7 | . | 9 | 14 | 38 | 36 | 38 | 35 | 6 | . | . | |||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | 4 | 2 | 10 | 11 | 8 | 6 | 2 | . | . | . | |||||||
| Adonis Blue | . | . | . | . | 1 | 1 | . | 1 | . | . | . | . | . | . | 6 | 8 | 1 | . | . | |||||||
| Duke of Burgundy Fritillary | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | 1 | . | 4 | . | 2 | |||||||
| Peacock | 1 | 1 | . | . | . | . | . | . | . | . | 2 | 1 | 1 | 1 | . | . | . | . | . | |||||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | 1 | 1 | 3 | 5 | 1 | 2 | . | . | . | . | . | |||||||
| Speckled Wood | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | |||||||
| Marbled White | . | . | . | . | . | . | . | 1 | 47 | 124 | 24 | 16 | 3 | . | . | . | . | . | . | |||||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | 1 | 59 | 58 | 30 | 37 | 3 | . | . | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | 2 | 8 | 34 | 52 | 125 | 112 | 185 | 225 | 188 | 138 | 84 | 24 | . | . | |||||||
| Small Heath | . | . | . | . | 3 | 12 | 21 | 21 | 41 | 35 | 17 | 10 | 1 | 6 | 17 | 16 | 9 | 1 | 4 | |||||||
| Ringlet | . | . | . | . | . | . | . | . | 9 | 46 | 6 | 1 | . | . | . | . | . | . | . | |||||||