
| 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 | 83 | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 16 | 16 | 28 | 6 | . | . | . | . | . | . | ||||
| Large Skipper | 43 | . | . | . | . | . | . | . | 3 | 6 | 16 | 4 | 1 | 1 | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 116 | 3 | 7 | 1 | 1 | . | 1 | 1 | 9 | . | 6 | 2 | . | 1 | 3 | 32 | 25 | . | 8 | 2 | 1 | 8 | 1 | ||||
| Large White | 63 | . | . | . | . | . | . | . | 1 | . | 2 | 2 | . | 9 | 12 | 10 | 2 | . | 4 | . | 2 | . | . | ||||
| Small White | 27 | . | 1 | . | . | . | . | . | . | . | 1 | . | . | 4 | 2 | 10 | 5 | . | . | . | 3 | . | . | ||||
| Green-veined White | 38 | . | . | . | 1 | . | 1 | 3 | 7 | 3 | . | . | . | . | 2 | 7 | 8 | 1 | 3 | . | . | 1 | 4 | ||||
| Orange Tip | 5 | . | . | 4 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brown Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | ||||
| Purple Hairstreak | 7 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | 4 | . | . | . | . | . | . | ||||
| Small Copper | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | 1 | 1 | . | 1 | . | ||||
| Common Blue | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | 2 | 1 | . | . | ||||
| White Admiral | 1 | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 18 | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | 2 | 1 | 2 | 10 | 1 | ||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||
| Small Tortoiseshell | 69 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 4 | 17 | 11 | 19 | 13 | ||||
| Peacock | 82 | 4 | 10 | 13 | 2 | . | 1 | . | . | . | . | . | . | . | 24 | 66 | 55 | 1 | 6 | 2 | . | . | . | ||||
| Comma | 9 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | 3 | 2 | ||||
| Small Pearl-bordered Fritillary | 20 | . | . | . | . | . | . | . | 10 | 5 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | 80 | . | . | . | . | . | . | . | . | . | 1 | 6 | 12 | 15 | 11 | 15 | 11 | . | . | . | . | . | . | ||||
| Marsh Fritillary | 238 | . | . | . | . | . | 27 | 60 | 87 | 34 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 129 | . | 1 | . | 3 | . | 1 | 2 | 3 | . | 1 | . | . | . | 5 | 12 | 5 | 11 | 12 | 34 | 27 | 8 | 5 | ||||
| Marbled White | 216 | . | . | . | . | . | . | . | . | . | 1 | 26 | 21 | 79 | 2 | 2 | . | . | . | . | . | . | . | ||||
| Gatekeeper / Hedge Brown | 376 | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 21 | 86 | 100 | 109 | 9 | 5 | 1 | . | . | . | ||||
| Meadow Brown | 674 | . | . | . | . | . | . | . | . | 2 | 88 | 151 | 34 | 112 | 40 | 29 | 3 | . | . | . | . | . | . | ||||
| Ringlet | 289 | . | . | . | . | . | . | . | . | . | 45 | 46 | . | 75 | . | . | . | . | . | . | . | . | . | ||||