
| 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/Essex Skipper | 7 | . | . | . | . | . | . | . | . | . | 2 | 1 | . | 3 | . | . | . | . | . | . | . | . | |||||
| Silver-spotted Skipper | 35 | . | . | . | . | . | . | . | . | . | . | . | . | . | 9 | 13 | 11 | . | 3 | . | . | . | |||||
| Large Skipper | 2 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Berger's Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||
| Brimstone | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Large White | 15 | . | . | . | . | 1 | 1 | . | . | . | . | 1 | 5 | 3 | 4 | . | . | . | . | . | . | . | |||||
| Small White | 10 | . | . | . | 1 | . | . | . | . | . | . | 1 | 5 | 1 | 1 | . | 1 | . | . | . | . | . | |||||
| Green-veined White | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Orange Tip | NI | . | . | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| White-letter Hairstreak | 2 | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Common Blue | 33 | . | . | . | . | . | 5 | 1 | 1 | . | . | . | . | 2 | 1 | 5 | 6 | 5 | 5 | 1 | 1 | . | |||||
| Holly Blue | 2 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Purple Emperor | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 14 | . | . | 1 | . | . | . | 1 | 3 | . | . | . | . | 5 | . | 1 | 1 | . | . | . | 1 | . | |||||
| Painted Lady | 3 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | NI | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Comma | 7 | . | 1 | . | . | . | . | . | . | . | 2 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 101 | . | . | 2 | . | . | 7 | 8 | 5 | 4 | 8 | . | 3 | 6 | 4 | 9 | 3 | 4 | 5 | 9 | 15 | 5 | |||||
| Gatekeeper / Hedge Brown | 19 | . | . | . | . | . | . | . | . | . | . | 1 | . | 10 | 6 | . | . | . | 1 | . | . | . | |||||
| Meadow Brown | 156 | . | . | . | . | . | . | 1 | 12 | 12 | 14 | 16 | 15 | 15 | 15 | 20 | 14 | 11 | 6 | 3 | 2 | 2 | |||||
| Small Heath | 14 | . | . | . | . | . | . | 1 | . | . | 2 | 1 | . | . | . | 3 | 1 | 1 | 2 | 2 | 1 | . | |||||
| Ringlet | 7 | . | . | . | . | . | . | . | 1 | 2 | 3 | . | 1 | . | . | . | . | . | . | . | . | . | |||||