
| 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 | 185 | . | . | . | . | . | . | . | . | 7 | 30 | 74 | 29 | 10 | . | . | . | . | . | . | |||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | 3 | . | 2 | . | . | . | . | . | . | . | |||||||
| Large Skipper | 24 | . | . | . | 1 | 1 | 2 | 4 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 29 | . | 2 | 7 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Large White | 6 | . | . | . | . | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small White | 7 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | |||||||
| Green-veined White | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Orange Tip | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 10 | . | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Small Blue | 11 | . | . | 4 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brown Argus | 24 | . | . | . | . | 1 | . | . | . | . | . | . | . | 2 | 2 | 1 | . | . | . | . | |||||||
| Common Blue | 130 | . | . | . | 8 | 12 | 1 | 1 | 7 | . | . | 1 | 2 | 19 | 18 | 10 | 6 | 1 | . | . | |||||||
| Chalk-hill Blue | 5 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Adonis Blue | 171 | . | . | 18 | 44 | 13 | 7 | 2 | 3 | . | . | . | . | 1 | 14 | 21 | 13 | 5 | 5 | 1 | |||||||
| Duke of Burgundy Fritillary | 15 | . | . | 3 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 30 | . | 1 | . | . | . | . | 3 | 5 | . | 3 | . | . | 3 | . | 1 | 1 | 1 | . | . | |||||||
| Peacock | 9 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | |||||||
| Dark Green Fritillary | 4 | . | . | . | . | . | . | . | . | . | 13 | 2 | . | . | . | . | . | . | . | . | |||||||
| Marsh Fritillary | 2 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Wall Brown | 33 | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 10 | 2 | . | . | . | . | . | |||||||
| Marbled White | 88 | . | . | . | . | . | . | . | 1 | 21 | 12 | 20 | 8 | 1 | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 9 | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | |||||||
| Meadow Brown | 231 | . | . | . | . | . | 1 | 5 | 3 | 24 | 31 | 50 | 25 | 29 | 2 | . | . | . | . | . | |||||||
| Small Heath | 198 | . | . | 1 | 13 | 15 | 13 | 21 | 19 | 4 | 8 | . | 1 | 3 | 16 | 12 | 8 | 6 | . | 1 | |||||||
| Ringlet | 33 | . | . | . | . | . | . | . | 1 | 6 | 12 | 1 | . | . | . | . | . | . | . | . | |||||||
| Five-spot Burnet | NI | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Mother Shipton | NI | . | . | . | 5 | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Burnet Companion | NI | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||