
| 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 Skipper | . | . | . | . | . | . | . | . | . | 10 | 18 | 2 | 5 | . | . | . | . | |||||||||
| Essex Skipper | . | . | . | . | . | . | . | . | 4 | 11 | 1 | . | . | . | . | . | . | |||||||||
| Large Skipper | . | . | . | . | . | . | . | 7 | 22 | 6 | 4 | 8 | . | . | . | . | . | |||||||||
| Brimstone | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Large White | . | . | . | . | 5 | 11 | 3 | 1 | 1 | 8 | 16 | 38 | 12 | 5 | 4 | 4 | 8 | |||||||||
| Small White | . | . | 2 | . | 10 | 3 | 1 | . | 1 | 1 | 2 | 18 | 4 | 1 | 4 | . | . | |||||||||
| Green-veined White | . | . | . | 8 | . | 1 | . | . | . | 1 | 14 | . | . | . | . | . | . | |||||||||
| Orange Tip | . | . | . | . | 2 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | |||||||||
| White-letter Hairstreak | . | . | . | . | . | . | . | 2 | 35 | 17 | 1 | . | . | . | . | . | . | |||||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Common Blue | . | . | . | . | . | 1 | . | . | . | . | . | . | 2 | 1 | . | . | . | |||||||||
| Red Admiral | . | . | . | . | 2 | . | . | . | 3 | 6 | 12 | 3 | 1 | . | . | . | . | |||||||||
| Small Tortoiseshell | 2 | 2 | 1 | . | . | . | . | . | 8 | 16 | 5 | 2 | 2 | . | 2 | 2 | 16 | |||||||||
| Peacock | 29 | 27 | 34 | 23 | 2 | 1 | 1 | . | . | 180 | 286 | 174 | 6 | 1 | . | . | . | |||||||||
| Comma | . | . | 1 | 1 | . | . | . | . | 5 | 20 | 14 | 4 | . | . | 7 | 2 | 1 | |||||||||
| Speckled Wood | . | . | . | 3 | . | 3 | 15 | 9 | 15 | . | 2 | . | 20 | 76 | 55 | 30 | 21 | |||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 34 | 41 | 114 | 10 | 15 | . | . | . | |||||||||
| Meadow Brown | . | . | . | . | . | . | . | 6 | 31 | 156 | 108 | 65 | 45 | 8 | . | . | . | |||||||||
| Small Heath | . | . | . | . | . | 1 | 2 | 1 | 1 | . | . | . | . | . | . | . | . | |||||||||
| Ringlet | . | . | . | . | . | . | . | 29 | 225 | 52 | 24 | 4 | 6 | . | . | . | . | |||||||||