
| 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 | . | . | . | . | . | 9 | 16 | 4 | . | 6 | . | . | . | . | . | . | . | |||||||||
| Large Skipper | 42 | . | . | . | 3 | 5 | 10 | 12 | 4 | . | 1 | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | NI | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||||
| Brimstone | NI | 2 | 1 | . | . | 1 | . | 1 | 1 | . | . | . | 1 | . | . | . | . | . | |||||||||
| Large White | NI | . | 3 | . | . | . | 5 | . | 16 | 1 | 6 | 9 | 10 | . | 2 | . | 1 | . | |||||||||
| Small White | NI | 3 | 7 | . | 4 | . | 4 | 2 | . | 3 | 7 | 6 | 8 | 20 | 9 | 2 | 6 | . | |||||||||
| Green-veined White | NI | 8 | . | . | . | . | . | . | . | 7 | 31 | . | . | . | 8 | . | . | . | |||||||||
| Orange Tip | NI | 11 | 13 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | 1 | . | 2 | . | 1 | . | 2 | . | 1 | . | 14 | 6 | |||||||||
| Silver-studded Blue | NI | . | . | . | . | . | 6 | 6 | . | . | . | . | 1 | 2 | . | . | . | . | |||||||||
| Common Blue | 20 | . | . | . | . | . | . | . | . | . | 7 | 2 | 2 | 9 | . | . | . | . | |||||||||
| Red Admiral | 17 | . | . | . | . | . | 4 | . | . | . | 4 | . | 1 | 3 | 1 | . | 4 | . | |||||||||
| Painted Lady | 5 | . | . | . | . | . | . | . | . | . | . | . | 5 | . | . | . | . | . | |||||||||
| Small Tortoiseshell | NI | . | . | . | . | . | 1 | . | . | . | . | 1 | 3 | 16 | 8 | . | 1 | . | |||||||||
| Peacock | NI | . | . | . | . | . | . | . | 3 | 1 | 3 | 3 | 2 | . | . | . | . | . | |||||||||
| Comma | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||||
| Marsh Fritillary | 2 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | 2 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | |||||||||
| Wall Brown | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Marbled White | 48 | . | . | . | . | . | 10 | 20 | 9 | 4 | . | . | . | . | . | . | . | . | |||||||||
| Grayling | 5 | . | . | . | . | . | . | . | 1 | . | 3 | . | 1 | 2 | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 124 | . | . | . | . | . | . | 15 | 32 | 43 | 17 | 9 | 5 | 3 | . | . | . | . | |||||||||
| Meadow Brown | NI | . | . | . | 18 | 25 | 28 | 69 | 17 | 4 | 32 | . | 15 | 22 | 2 | 1 | 1 | . | |||||||||
| Small Heath | 87 | . | . | 2 | 9 | 17 | 7 | 7 | 2 | . | . | 9 | 1 | 13 | 5 | 2 | 1 | . | |||||||||