
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 6 | 2 | . | . | . | |||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 6 | 14 | 4 | 3 | . | . | |||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | . | 1 | 2 | 13 | 9 | 1 | 1 | 1 | . | . | . | . | . | |||||
| Brimstone | NI | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Large White | NI | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | . | 2 | 23 | 16 | 18 | 6 | . | 2 | |||||
| Small White | NI | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | 1 | 12 | 11 | 3 | 10 | 1 | |||||
| Green-veined White | NI | . | . | . | 1 | . | 2 | . | 3 | . | . | . | . | . | 1 | 5 | 17 | 13 | 15 | 1 | 2 | . | |||||
| Small Copper | NI | . | . | . | . | . | 1 | 2 | . | . | 1 | . | . | . | . | 1 | 1 | 3 | 3 | 1 | . | . | |||||
| Brown Argus | NI | . | . | . | . | . | . | . | 4 | 9 | . | . | 2 | . | . | . | . | 1 | 2 | 9 | . | . | |||||
| Common Blue | NI | . | . | . | . | . | . | 1 | 4 | 18 | 13 | 4 | 8 | 3 | . | . | 3 | 4 | 8 | 23 | 3 | 4 | |||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 8 | 31 | 29 | 2 | . | |||||
| Adonis Blue | NI | . | . | . | . | . | . | . | 8 | 52 | 30 | 2 | 6 | 2 | . | . | . | . | . | 3 | 107 | 25 | |||||
| Red Admiral | NI | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | 3 | |||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||
| Small Tortoiseshell | NI | . | 1 | . | . | 1 | 3 | . | . | 1 | 1 | . | . | . | . | 1 | 1 | 2 | 2 | . | 17 | 8 | |||||
| Peacock | NI | 2 | 1 | . | 2 | 2 | 9 | 4 | 3 | 2 | . | . | . | . | . | . | . | . | 21 | 2 | . | . | |||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Marsh Fritillary | NI | . | . | . | . | . | 64 | 64 | 60 | 24 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Marbled White | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 26 | 33 | 55 | 40 | 1 | . | . | . | |||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 9 | 48 | 50 | 12 | 1 | . | . | |||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | . | 1 | 20 | 39 | 118 | 95 | 206 | 280 | 177 | 149 | 3 | 2 | |||||
| Small Heath | NI | . | . | . | . | . | 3 | 1 | 15 | 11 | 6 | 6 | 12 | 2 | 2 | 1 | 1 | 1 | . | 1 | . | . | |||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | . | 7 | 68 | 131 | 121 | 42 | 8 | . | . | . | . | |||||