
| 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 | . | . | . | . | . | . | . | 2 | 2 | 10 | . | 9 | . | . | 1 | . | . | . | . | . | ||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | 1 | 4 | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Large Skipper | 6 | . | . | . | . | . | 1 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 2 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large White | 13 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | 2 | . | 3 | 3 | 1 | . | ||||||
| Small White | NI | 1 | . | . | 1 | . | . | . | . | . | 3 | . | 9 | 5 | 1 | 10 | 9 | 3 | 4 | 5 | . | ||||||
| Green-veined White | 42 | . | . | 7 | 3 | 2 | 1 | . | . | . | . | 1 | 2 | 7 | 5 | 3 | . | 1 | . | . | . | ||||||
| Orange Tip | NI | 4 | . | 6 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brown Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | ||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| White-letter Hairstreak | 4 | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | ||||||
| Small Copper | NI | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Common Blue | 45 | . | . | . | 3 | 11 | 11 | 3 | 1 | . | . | . | 1 | . | 3 | 1 | . | . | . | . | . | ||||||
| Holly Blue | NI | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| White Admiral | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 12 | . | . | . | . | . | . | 1 | . | . | . | . | . | 2 | 2 | 2 | . | 2 | . | 1 | 1 | ||||||
| Small Tortoiseshell | 30 | 6 | . | 1 | 2 | . | 1 | . | 7 | . | . | . | . | 2 | 2 | 1 | . | 3 | . | 1 | . | ||||||
| Peacock | NI | 5 | . | 2 | 4 | . | . | . | . | . | . | 1 | 2 | 6 | 11 | . | . | . | . | . | . | ||||||
| Comma | 6 | 3 | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 69 | 3 | . | 1 | . | 3 | 8 | 4 | 3 | . | . | . | 3 | 4 | . | 12 | 5 | 4 | 3 | . | 2 | ||||||
| Gatekeeper / Hedge Brown | 212 | . | . | . | . | . | . | . | . | . | 6 | 12 | 58 | 93 | 34 | 6 | . | . | . | . | . | ||||||
| Meadow Brown | 231 | . | . | . | . | . | 1 | 13 | 18 | 19 | 35 | 33 | 41 | 28 | 15 | 6 | . | . | . | . | . | ||||||
| Small Heath | 5 | . | . | . | 1 | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||