
| 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 | 150 | . | . | . | . | . | . | . | 15 | 21 | 7 | 59 | 31 | 16 | 1 | . | . | . | . | . | |||||||
| Large Skipper | 91 | . | . | . | . | . | 19 | 52 | 15 | 1 | 1 | 1 | 4 | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 26 | . | . | 2 | 12 | 7 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 25 | . | . | 8 | 12 | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Brimstone | 238 | 12 | 11 | 10 | 13 | 5 | 3 | 5 | 1 | . | . | 3 | 15 | 37 | 12 | 10 | 12 | 1 | 3 | 14 | |||||||
| Large White | 91 | . | . | . | 1 | 5 | 4 | 3 | . | 2 | 1 | 11 | 16 | 12 | 2 | 26 | 3 | 6 | . | . | |||||||
| Small White | 131 | . | . | . | 3 | 2 | 1 | 2 | 4 | 1 | . | 2 | 21 | 34 | 13 | 17 | 6 | . | 1 | 1 | |||||||
| Green-veined White | 106 | . | 4 | 3 | 11 | 7 | 1 | 1 | 2 | . | 1 | 10 | 2 | 21 | 10 | . | 9 | . | . | . | |||||||
| Orange Tip | 29 | 1 | 10 | 7 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 7 | . | . | 3 | 4 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 39 | . | . | 3 | 4 | 3 | 1 | . | . | . | . | 6 | 6 | 3 | 3 | . | 1 | . | . | 1 | |||||||
| Brown Argus | 62 | . | . | 1 | 2 | 12 | 4 | 3 | 1 | . | . | . | . | 1 | 32 | 7 | 11 | . | . | . | |||||||
| Common Blue | 147 | . | . | . | 1 | 17 | 10 | 12 | 7 | . | . | . | 2 | 9 | 150 | 32 | 20 | . | 2 | 2 | |||||||
| Holly Blue | 7 | . | 1 | 1 | 1 | . | . | . | . | . | . | . | 2 | . | . | . | 2 | . | . | . | |||||||
| Duke of Burgundy Fritillary | 3 | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | 47 | . | . | 2 | 2 | . | 1 | 2 | 3 | 1 | 1 | 9 | 13 | 12 | 3 | . | 3 | . | . | . | |||||||
| Painted Lady | 7 | . | . | 1 | . | . | . | 1 | . | 1 | . | 1 | 2 | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 52 | . | . | 1 | . | . | 1 | . | 6 | 8 | 1 | 3 | 1 | . | 1 | 1 | 4 | 6 | . | 2 | |||||||
| Peacock | 300 | 11 | 18 | 12 | 8 | 1 | 1 | . | . | . | . | 43 | 61 | 56 | 6 | 11 | 3 | . | 10 | 6 | |||||||
| Comma | 17 | . | . | 1 | 1 | . | . | . | 5 | . | 1 | 3 | 1 | 1 | . | . | . | . | . | 1 | |||||||
| Pearl-bordered Fritillary | 16 | . | . | 6 | 8 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Silver-washed Fritillary | 115 | . | . | . | . | . | . | 2 | 4 | 6 | . | 11 | 18 | 22 | 9 | 7 | 1 | . | . | . | |||||||
| Speckled Wood | 101 | 1 | . | 3 | 3 | 3 | 5 | 15 | 3 | . | . | . | 3 | 1 | 3 | 14 | 19 | 4 | 7 | 1 | |||||||
| Wall Brown | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | |||||||
| Marbled White | 282 | . | . | . | . | . | . | 5 | 96 | 77 | 50 | 32 | 15 | 7 | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 328 | . | . | . | . | . | . | . | . | 9 | 2 | 35 | 94 | 100 | 27 | . | 2 | . | . | . | |||||||
| Meadow Brown | 609 | . | . | . | . | . | . | 47 | 70 | 19 | 19 | 45 | 65 | 155 | 37 | 19 | 36 | . | . | . | |||||||
| Small Heath | 4 | . | . | . | . | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Ringlet | 768 | . | . | . | . | . | . | 11 | 88 | 305 | 120 | 185 | 48 | 17 | . | . | . | . | . | . | |||||||