
| 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 | 96 | . | . | . | . | . | . | . | . | . | . | . | 8 | 13 | 27 | 23 | 12 | 9 | 1 | 5 | . | . | . | ||||
| Silver-spotted Skipper | 58 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 25 | 11 | 21 | . | . | . | . | ||||
| Large Skipper | 16 | . | . | . | . | . | . | . | . | . | 4 | 3 | 3 | 1 | 3 | 2 | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 15 | . | . | . | 3 | 4 | 2 | 1 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 46 | 1 | 3 | 1 | 2 | 5 | 2 | 11 | 2 | 1 | 3 | . | 1 | . | 6 | 2 | 1 | 2 | . | . | . | . | . | ||||
| Large White | 10 | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | 3 | 1 | 3 | . | . | . | 1 | . | . | ||||
| Small White | 18 | . | 1 | . | . | 4 | 2 | 1 | 1 | . | . | . | . | . | . | 3 | . | 1 | 2 | . | . | 1 | . | ||||
| Green-veined White | 3 | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||
| Orange Tip | 8 | . | . | . | 3 | 2 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 4 | . | . | . | . | 1 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 42 | . | . | 1 | 1 | 3 | 1 | 3 | 4 | 4 | . | . | . | . | 3 | 4 | 2 | 3 | 3 | . | . | 5 | 1 | ||||
| Brown Argus | 215 | . | . | . | . | . | . | 8 | 16 | 8 | 5 | 3 | 2 | . | . | . | 8 | 13 | 23 | 9 | 45 | 16 | 8 | ||||
| Common Blue | 146 | . | . | . | . | . | . | . | 5 | 8 | 4 | 5 | . | . | . | . | 32 | 20 | 35 | 15 | 8 | . | 1 | ||||
| Holly Blue | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 7 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 3 | 1 | 1 | 1 | . | . | . | . | . | ||||
| Painted Lady | 8 | . | . | . | . | . | . | 1 | 1 | . | 1 | 1 | . | . | . | 1 | 3 | 1 | . | . | . | . | . | ||||
| Small Tortoiseshell | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Peacock | 10 | 1 | 1 | 1 | . | 1 | . | . | . | 2 | 1 | . | . | . | . | . | 1 | . | 1 | . | . | . | . | ||||
| Comma | 17 | 3 | . | 4 | . | . | . | . | . | . | 1 | . | 1 | 2 | 1 | . | 2 | . | . | . | 1 | . | . | ||||
| Silver-washed Fritillary | 20 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 13 | 4 | . | . | 1 | . | . | . | . | ||||
| Speckled Wood | 3 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||
| Marbled White | 27 | . | . | . | . | . | . | . | . | . | . | . | 3 | 5 | 10 | 4 | 4 | 2 | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 153 | . | . | . | . | . | . | . | . | . | . | . | . | . | 20 | 35 | 44 | 19 | 25 | 8 | . | . | . | ||||
| Meadow Brown | 451 | . | . | . | . | . | . | . | . | . | 1 | 3 | 33 | 30 | 64 | 68 | 80 | 40 | 45 | 13 | 18 | 7 | 18 | ||||
| Small Heath | 63 | . | . | . | . | 1 | . | . | 2 | . | 4 | 11 | 7 | 7 | 2 | 2 | . | . | . | . | 1 | 4 | 10 | ||||
| Ringlet | 135 | . | . | . | . | . | . | . | . | . | . | . | 50 | 40 | 33 | 12 | 4 | 2 | . | . | . | . | . | ||||