
| 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 | 12 | . | . | . | . | . | . | . | . | . | . | 6 | 1 | . | 1 | . | . | . | |||||||||
| Large Skipper | 12 | . | . | . | . | . | 1 | 1 | 4 | 2 | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 2 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 28 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 7 | 5 | 14 | |||||||||
| Brimstone | 74 | . | 11 | 6 | 18 | 7 | 2 | 1 | . | . | . | . | 5 | . | . | . | . | . | |||||||||
| Large White | 26 | . | . | . | 4 | 2 | 2 | . | 1 | 1 | . | 1 | 10 | 1 | 1 | . | . | 1 | |||||||||
| Small White | 19 | . | . | . | . | . | . | . | . | . | . | 1 | 15 | . | . | 1 | . | 2 | |||||||||
| Green-veined White | 43 | . | 1 | . | 11 | 8 | 1 | 7 | . | . | . | . | . | . | 3 | 1 | 1 | . | |||||||||
| Orange Tip | NI | . | 7 | 1 | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 3 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||||
| Small Copper | NI | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brown Argus | 29 | . | . | . | 1 | . | 1 | 1 | . | . | . | . | 4 | 4 | . | 15 | . | 3 | |||||||||
| Common Blue | 39 | . | . | . | 1 | . | 1 | 1 | 2 | 1 | . | 2 | 6 | 2 | 10 | 5 | 2 | 3 | |||||||||
| Holly Blue | 11 | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | 7 | . | . | . | |||||||||
| Red Admiral | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 4 | |||||||||
| Painted Lady | 12 | . | . | . | . | . | . | . | 2 | . | . | 3 | . | . | . | 2 | . | 2 | |||||||||
| Small Tortoiseshell | 23 | . | . | . | . | . | . | . | 4 | 3 | 1 | . | 3 | . | . | 2 | 2 | 4 | |||||||||
| Peacock | NI | 12 | 10 | 3 | 3 | 1 | . | . | . | . | 6 | 3 | 3 | 1 | . | . | . | . | |||||||||
| Comma | 3 | 1 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||||
| Silver-washed Fritillary | 8 | . | . | . | . | . | . | . | . | 2 | . | . | 5 | . | . | . | . | . | |||||||||
| Speckled Wood | 179 | 2 | 10 | 2 | 9 | 5 | 13 | 5 | 8 | 1 | 6 | 8 | 13 | 15 | 10 | 21 | 6 | 10 | |||||||||
| Wall Brown | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Marbled White | 86 | . | . | . | . | . | . | . | 19 | 26 | 8 | 1 | 1 | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 234 | . | . | . | . | . | . | . | . | . | 45 | 45 | 55 | 4 | 17 | 1 | . | . | |||||||||
| Meadow Brown | 659 | . | . | . | . | . | 2 | 2 | 108 | 64 | 53 | 104 | 63 | 26 | 27 | 16 | 1 | 2 | |||||||||
| Small Heath | 61 | . | . | . | . | 6 | 3 | 2 | 10 | 13 | 1 | . | 2 | 1 | . | 4 | 4 | 2 | |||||||||
| Ringlet | 111 | . | . | . | . | . | . | . | 22 | 29 | 13 | 1 | . | . | . | . | 7 | . | |||||||||