
| 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 | 19 | . | . | . | . | . | . | . | . | . | . | 2 | 6 | 5 | 4 | . | . | . | . | ||||||||
| Essex Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Large Skipper | 13 | . | . | . | . | . | . | . | . | 5 | 5 | . | . | 1 | . | . | . | . | . | ||||||||
| Brimstone | 26 | 4 | . | 1 | 5 | 1 | . | . | . | . | . | . | . | 2 | . | . | . | 5 | 1 | ||||||||
| Large White | NI | . | . | . | 2 | 1 | 3 | 6 | 3 | . | . | 4 | 6 | 4 | 3 | 1 | 1 | . | . | ||||||||
| Small White | 37 | 1 | . | . | 1 | 1 | 0.5 | . | . | . | . | 2 | 3 | 2 | 8 | 5 | 1 | . | . | ||||||||
| Green-veined White | NI | . | 1 | . | . | 2 | 3.5 | 3 | 1 | . | 1 | 3 | 5 | 8 | 19 | 13 | 6 | 4 | 1 | ||||||||
| Orange Tip | 19 | 1 | 1 | 2 | 5 | 4 | 1.5 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | ||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | . | ||||||||
| Brown Argus | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | . | . | . | ||||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | ||||||||
| White Admiral | 10 | . | . | . | . | . | . | . | . | . | 2 | 3 | . | 1 | 1 | . | . | . | . | ||||||||
| Red Admiral | 4 | . | . | . | . | . | . | . | 1 | . | 1 | . | . | 1 | . | . | . | . | . | ||||||||
| Painted Lady | 5 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 1 | . | . | . | ||||||||
| Small Tortoiseshell | 6 | 1 | 1 | . | . | 1 | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | ||||||||
| Peacock | 162 | 8 | 8 | 8 | 21 | 13 | 5 | . | 1 | . | . | . | . | 7 | 42 | 6 | 2 | 4 | 1 | ||||||||
| Comma | 36 | 5 | . | 1 | 1 | 1 | . | . | . | . | . | 4 | 4 | 1 | 2 | . | 1 | 3 | 4 | ||||||||
| Silver-washed Fritillary | 46 | . | . | . | . | . | . | . | . | . | . | 7 | 7 | 11 | 9 | 2 | . | . | . | ||||||||
| Speckled Wood | NI | . | . | . | . | 1 | 1.5 | 1 | 1 | 3 | . | . | . | 2 | 4 | 7 | 6 | 2 | 1 | ||||||||
| Marbled White | 5 | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 153 | . | . | . | . | . | . | . | . | . | . | 7 | 21 | 30 | 40 | 17 | . | . | . | ||||||||
| Meadow Brown | 358 | . | . | . | . | . | . | 2 | . | 25 | 39 | 68 | 57 | 39 | 34 | 15 | . | 1 | . | ||||||||
| Ringlet | 178 | . | . | . | . | . | . | . | . | 29 | 55 | 27 | 13 | 1 | . | . | . | . | . | ||||||||