
| 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 | . | . | . | . | . | . | . | 3 | 11 | 23 | 6 | . | 28 | . | . | . | . | |||||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | 6 | . | . | . | . | . | . | . | . | |||||||||
| Large Skipper | NI | . | . | . | . | . | . | 21 | 6 | 9 | . | . | 1 | 3 | . | . | . | . | |||||||||
| Brimstone | NI | 3 | 11 | . | 2 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | |||||||||
| Large White | NI | . | . | . | 4 | 2 | 3 | 3 | 1 | 11 | 28 | 36 | 9 | 48 | 12 | 3 | 1 | 1 | |||||||||
| Small White | NI | . | . | . | . | 3 | 4 | 1 | 3 | 13 | 16 | 16 | 2 | 12 | . | . | . | 1 | |||||||||
| Green-veined White | NI | . | . | . | . | . | 1 | . | . | 4 | 19 | 15 | 20 | 20 | 8 | 1 | . | . | |||||||||
| Orange Tip | NI | . | . | 2 | 10 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | |||||||||
| White-letter Hairstreak | 3 | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | |||||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | . | . | |||||||||
| Holly Blue | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 79 | . | . | . | . | 3 | 2 | . | 1 | 1 | 15 | 8 | 5 | 13 | 4 | 2 | 1 | 6 | |||||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | . | . | 1 | . | |||||||||
| Small Tortoiseshell | 215 | 5 | 4 | . | 4 | 3 | . | 12 | 9 | 24 | 20 | 7 | 12 | 29 | 27 | 9 | 5 | 2 | |||||||||
| Peacock | 173 | 5 | 2 | 2 | 3 | 5 | 1 | . | . | 7 | 48 | 30 | 3 | 18 | 10 | . | 3 | . | |||||||||
| Comma | 30 | . | . | . | . | . | . | 1 | 2 | 3 | 5 | 2 | 1 | 4 | . | . | 2 | 2 | |||||||||
| Speckled Wood | NI | . | . | 2 | 3 | . | 2 | 7 | . | 1 | 5 | 9 | 9 | 2 | 13 | 11 | 3 | 1 | |||||||||
| Gatekeeper / Hedge Brown | 456 | . | . | . | . | . | . | . | . | 5 | 139 | 139 | 40 | 63 | . | . | . | . | |||||||||
| Meadow Brown | 397 | . | . | . | . | . | . | 51 | 54 | 67 | 32 | 30 | 9 | 77 | 1 | . | . | . | |||||||||
| Ringlet | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||