
| 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 | NI | . | . | . | . | . | . | . | . | . | 17 | 13 | 12 | 6 | 3 | 2 | . | . | . | . | |||||||
| Small Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||||||
| Large Skipper | 49 | . | . | . | . | 3 | 5 | 6 | 1 | 1 | 6 | 17 | 4 | 4 | . | . | . | . | . | . | |||||||
| Dingy Skipper | 8 | . | . | . | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | |||||||
| Brimstone | 15 | 1 | 1 | 1 | 2 | . | . | . | . | . | . | 1 | 2 | 1 | . | 1 | . | . | . | . | |||||||
| Large White | 19 | . | . | 1 | . | . | . | . | . | . | 1 | 2 | 6 | 3 | 3 | 2 | 1 | . | . | . | |||||||
| Small White | 50 | . | . | 1 | . | . | 1 | . | . | . | 7 | 8 | 16 | 8 | 1 | 6 | . | 2 | . | . | |||||||
| Green-veined White | NI | . | . | 5 | . | . | . | . | . | . | . | . | 1 | . | 3 | 1 | . | . | . | . | |||||||
| Orange Tip | NI | 1 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Purple Hairstreak | 5 | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | . | . | . | . | . | . | |||||||
| Small Copper | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | 1 | . | |||||||
| Common Blue | 125 | . | . | . | 9 | 16 | 5 | 7 | 1 | 1 | 3 | 1 | . | 5 | 5 | 27 | 13 | 9 | 5 | 2 | |||||||
| Holly Blue | 4 | . | 1 | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | . | . | . | . | |||||||
| Red Admiral | 7 | . | . | . | . | . | . | . | 1 | 1 | 2 | 1 | 1 | . | . | . | . | . | 1 | . | |||||||
| Painted Lady | 14 | . | . | . | . | 1 | 2 | 1 | . | . | . | . | 1 | 1 | 2 | 5 | . | . | 1 | . | |||||||
| Small Tortoiseshell | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | 1 | . | |||||||
| Peacock | 20 | 3 | 1 | 2 | . | . | . | . | . | . | . | . | . | 1 | 5 | 2 | 1 | . | . | . | |||||||
| Comma | 4 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | 1 | |||||||
| Silver-washed Fritillary | 7 | . | . | . | . | . | . | . | . | . | 3 | 1 | 2 | 1 | . | . | . | . | . | . | |||||||
| Speckled Wood | 29 | . | . | 1 | . | . | . | . | 2 | . | . | 5 | 1 | 3 | 2 | 2 | 8 | 2 | 1 | 2 | |||||||
| Gatekeeper / Hedge Brown | 206 | . | . | . | . | . | . | . | . | . | . | 16 | 58 | 70 | 35 | 24 | 2 | 1 | . | . | |||||||
| Meadow Brown | 312 | . | . | . | . | 3 | 12 | 34 | 23 | 22 | 34 | 52 | 32 | 55 | 20 | 18 | 5 | . | . | . | |||||||
| Small Heath | 4 | . | . | . | . | . | . | . | 1 | . | . | 3 | . | . | . | . | . | . | . | . | |||||||
| Ringlet | 11 | . | . | . | . | . | 2 | 1 | 5 | 2 | . | . | 1 | . | . | . | . | . | . | . | |||||||