
| 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 | . | . | . | . | . | . | 1 | . | 3 | 1 | . | 19 | 19 | 25 | 65 | 26 | 3 | . | . | |||||||
| Silver-spotted Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | |||||||
| Large Skipper | 19 | . | . | . | . | . | . | 1 | 6 | 3 | 5 | 1 | 1 | . | 1 | 1 | . | . | . | . | |||||||
| Dingy Skipper | 6 | . | . | . | 1 | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 14 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 3 | 3 | 2 | 1 | . | |||||||
| Large White | 10 | . | . | . | 2 | 1 | . | . | 1 | . | . | . | . | 1 | . | 2 | 1 | 1 | . | . | |||||||
| Small White | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | |||||||
| Green-veined White | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Common Blue | 32 | . | . | . | . | . | 10 | 4 | 2 | 1 | 1 | 1 | . | . | . | 3 | 5 | . | . | 1 | |||||||
| Chalk-hill Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 10 | . | . | . | . | . | . | . | . | . | . | . | 4 | 2 | 1 | . | . | . | 1 | 2 | |||||||
| Peacock | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Speckled Wood | 6 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 1 | . | 1 | . | . | |||||||
| Marbled White | 56 | . | . | . | . | . | . | . | . | 1 | 1 | 7 | 24 | 12 | 10 | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 1 | . | . | . | |||||||
| Meadow Brown | 197 | . | . | . | . | . | . | 2 | 7 | 9 | 34 | 19 | 14 | 2 | 6 | 29 | 21 | 15 | 2 | 1 | |||||||
| Small Heath | 52 | . | . | . | . | 3 | 13 | 6 | 5 | 1 | 10 | 4 | 2 | . | . | 2 | 2 | . | . | . | |||||||
| Ringlet | 108 | . | . | . | . | . | . | . | . | 10 | 22 | 16 | 45 | 14 | 1 | . | . | . | . | . | |||||||