
| 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 | 1 | . | . | . | . | . | . | |||||||||
| Large Skipper | NI | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Brimstone | 45 | . | . | . | . | . | . | . | . | . | 1 | 10 | 5 | 4 | . | 3 | . | . | |||||||||
| Large White | 17 | . | 1 | . | . | . | 1 | . | . | . | 7 | 2 | 3 | 1 | 1 | . | . | . | |||||||||
| Small White | 1 | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | 2 | . | . | |||||||||
| Green-veined White | NI | . | . | 1 | 1 | 2 | . | . | . | . | 8 | 1 | 7 | 3 | 3 | 2 | . | . | |||||||||
| Orange Tip | NI | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| White-letter Hairstreak | 4 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||||||
| Common Blue | 44 | . | . | . | . | . | 6 | . | . | . | . | . | 3 | 8 | . | 1 | . | . | |||||||||
| Holly Blue | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Duke of Burgundy Fritillary | NI | . | . | 2 | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | |||||||||
| Small Tortoiseshell | NI | 1 | . | . | . | . | . | . | . | 1 | 2 | . | . | . | 1 | . | . | . | |||||||||
| Peacock | NI | . | 4 | 2 | 1 | 1 | . | . | . | 3 | 15 | 5 | 1 | . | . | . | . | . | |||||||||
| Comma | NI | . | 2 | . | 1 | . | . | . | . | . | 3 | 1 | . | . | . | 3 | 8 | 5 | |||||||||
| Silver-washed Fritillary | 36 | . | . | . | . | . | . | . | . | 2 | 8 | 8 | 5 | 8 | 2 | . | . | . | |||||||||
| Speckled Wood | 17 | . | 1 | . | 1 | 1 | 2 | 1 | . | . | 1 | . | 1 | 1 | 3 | 1 | 2 | 3 | |||||||||
| Marbled White | NI | . | . | . | . | . | . | 2 | 77 | 4 | 5 | 2 | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 408 | . | . | . | . | . | . | . | . | 23 | 114 | 89 | 67 | 53 | 4 | . | . | . | |||||||||
| Meadow Brown | 88 | . | . | . | . | . | . | 1 | 8 | 8 | 7 | 19 | 17 | 15 | 5 | 3 | 3 | . | |||||||||
| Ringlet | NI | . | . | . | . | . | . | 8 | 73 | 12 | 53 | 1 | 3 | . | . | . | . | . | |||||||||