
| 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 | . | . | . | . | . | . | 6 | 6 | 32 | 6 | 2 | . | . | . | . | . | . | . | ||||||||
| Essex Skipper | . | . | . | . | . | . | . | . | 12 | 16 | . | . | . | . | . | . | . | . | ||||||||
| Large Skipper | . | . | . | . | 6 | . | 10 | . | 4 | 2 | . | . | . | . | . | . | . | . | ||||||||
| Large White | 4 | 6 | . | 2 | . | 6 | 2 | 2 | 14 | 6 | 8 | . | 6 | 4 | 2 | . | . | . | ||||||||
| Small White | 14 | 8 | 4 | 6 | 2 | 2 | 2 | 2 | 10 | 4 | 8 | 8 | 6 | 2 | . | 2 | . | . | ||||||||
| Green-veined White | . | . | . | . | . | 2 | . | . | 4 | . | 2 | . | . | . | . | 2 | . | . | ||||||||
| Purple Hairstreak | . | . | . | . | . | . | 2 | . | 2 | . | 4 | . | . | . | . | . | . | . | ||||||||
| Small Copper | 2 | 6 | . | 4 | 2 | . | . | 4 | 12 | 6 | 12 | 8 | 6 | 6 | 2 | 2 | 4 | 6 | ||||||||
| Common Blue | 20 | 20 | 32 | 18 | 10 | 4 | . | . | . | . | 4 | 4 | 24 | 26 | 10 | 4 | . | 2 | ||||||||
| Holly Blue | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | . | . | . | . | . | ||||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | ||||||||
| Small Tortoiseshell | 2 | 2 | . | . | . | . | 2 | . | 2 | . | . | . | . | . | . | . | . | . | ||||||||
| Peacock | 2 | 2 | . | . | . | . | . | . | 2 | . | 10 | . | . | . | . | . | . | . | ||||||||
| Comma | . | 2 | . | . | . | 2 | 10 | 6 | 6 | . | 4 | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 4 | 2 | . | 10 | 8 | 4 | 2 | 2 | 4 | 6 | 12 | 8 | 14 | 14 | 10 | 6 | 2 | . | ||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | 64 | 44 | 94 | 46 | 6 | 2 | . | . | . | . | ||||||||
| Meadow Brown | . | . | 2 | 58 | 42 | 128 | 98 | 66 | 188 | 114 | 46 | 36 | 26 | 16 | 2 | . | . | . | ||||||||
| Small Heath | 62 | 60 | 76 | 118 | 56 | 76 | 66 | 8 | 6 | 2 | . | 4 | 2 | 12 | 12 | 2 | 4 | 2 | ||||||||