
| 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/Essex Skipper | 25 | . | . | . | . | . | . | . | . | . | 8 | 13 | . | 6 | . | . | . | . | . | . | |||||||
| Small Skipper | 25 | . | . | . | . | . | . | . | . | 3 | . | . | 13 | 4 | 1 | . | . | . | . | . | |||||||
| Essex Skipper | 5 | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | . | . | . | . | . | . | |||||||
| Large Skipper | NI | . | . | . | . | . | . | 7 | 10 | 1 | 6 | 7 | . | . | . | 1 | . | . | . | . | |||||||
| Dingy Skipper | 6 | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 9 | . | . | 2 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 107 | 5 | 2 | 3 | 9 | 3 | 1 | 4 | . | 1 | . | 1 | 9 | 17 | 14 | 2 | 3 | 4 | 9 | . | |||||||
| Large White | 14 | . | . | . | 2 | . | . | . | . | . | 1 | 4 | 2 | 1 | 1 | 1 | 1 | . | . | . | |||||||
| Small White | 12 | . | 1 | . | . | . | . | . | . | . | . | 1 | 4 | 5 | 1 | . | . | . | . | . | |||||||
| Green-veined White | 34 | . | . | 2 | 2 | 6 | . | . | . | . | . | 3 | 6 | 1 | 1 | . | 5 | 1 | . | . | |||||||
| Orange Tip | 6 | 2 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 12 | . | . | 1 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 26 | . | . | 1 | 2 | 1 | 1 | . | . | . | . | . | 1 | . | 2 | 6 | 4 | 2 | . | 2 | |||||||
| Brown Argus | 35 | . | . | . | 1 | 2 | 3 | 2 | 3 | . | . | . | . | . | 2 | 5 | 5 | 6 | 1 | 1 | |||||||
| Common Blue | 76 | . | . | . | 5 | 6 | 6 | 1 | 3 | . | . | . | 1 | 3 | 9 | 12 | 8 | 8 | 3 | . | |||||||
| Chalk-hill Blue | 26 | . | . | . | . | . | . | . | . | . | . | 3 | 5 | 2 | 8 | 2 | 2 | 1 | 2 | . | |||||||
| Holly Blue | 10 | . | . | 1 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Duke of Burgundy Fritillary | 4 | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | 4 | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | |||||||
| Small Tortoiseshell | 11 | 1 | . | . | 1 | . | . | . | 1 | 1 | . | . | . | . | . | 2 | 3 | 3 | . | . | |||||||
| Peacock | 12 | 1 | . | . | 1 | 1 | . | . | . | . | . | . | 3 | 1 | 1 | . | 1 | . | . | . | |||||||
| Comma | 12 | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | 1 | . | 1 | 4 | |||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 112 | 4 | 1 | 2 | 3 | 2 | 3 | 4 | 6 | . | 1 | 1 | 1 | 5 | 6 | 9 | 22 | 13 | 10 | 6 | |||||||
| Marbled White | 4 | . | . | . | . | . | . | . | 1 | . | 2 | 1 | 1 | . | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 80 | . | . | . | . | . | . | . | . | . | 3 | 7 | 36 | 17 | 12 | 5 | . | . | . | . | |||||||
| Meadow Brown | 125 | . | . | . | . | . | . | 5 | 2 | 6 | 17 | 10 | 20 | 12 | 16 | 13 | 5 | 8 | 1 | . | |||||||
| Small Heath | 42 | . | . | . | 5 | 1 | . | 4 | 5 | 3 | 3 | 2 | 1 | . | 4 | 2 | 1 | 2 | 2 | . | |||||||
| Ringlet | NI | . | . | . | . | . | . | 7 | 50 | 62 | 28 | 19 | 4 | 2 | . | . | . | . | . | . | |||||||