
| 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 | 152 | . | . | . | . | . | . | . | 1 | 1 | 3 | 2 | 30 | 61 | 10 | 25 | 19 | . | . | . | |||||||
| Large Skipper | 52 | . | . | . | . | . | 2 | 8 | 67 | 32 | 1 | 2 | 11 | 5 | 1 | 1 | . | . | . | . | |||||||
| Dingy Skipper | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 6 | . | . | . | . | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||
| Brimstone | 51 | 1 | 9 | 7 | 7 | 2 | 4 | . | 1 | 1 | . | . | . | . | . | 9 | 10 | . | . | . | |||||||
| Large White | 40 | . | . | . | . | . | 6 | . | 1 | . | . | . | 2 | 16 | . | 3 | 7 | 4 | 1 | . | |||||||
| Small White | 31 | . | 3 | . | . | 1 | 3 | . | . | . | . | . | 1 | 4 | . | 1 | 12 | 5 | . | . | |||||||
| Green-veined White | 83 | . | . | 7 | 6 | 1 | 3 | . | 1 | . | . | 1 | 2 | 10 | 13 | 9 | 9 | 12 | 2 | 1 | |||||||
| Orange Tip | 9 | 3 | 2 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | |||||||
| Small Copper | 4 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | 1 | |||||||
| Common Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | |||||||
| Holly Blue | 16 | . | 1 | 3 | 1 | . | . | . | . | . | . | . | 2 | 4 | . | 2 | 1 | 1 | . | . | |||||||
| White Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||
| Red Admiral | 23 | . | . | 1 | 2 | . | 1 | . | . | . | . | . | 2 | 2 | 3 | . | . | . | 2 | 3 | |||||||
| Painted Lady | 10 | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 3 | 2 | 2 | . | |||||||
| Small Tortoiseshell | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | . | |||||||
| Peacock | 55 | . | 3 | 7 | 2 | . | . | . | . | . | . | . | . | 1 | . | 26 | 14 | 2 | . | . | |||||||
| Comma | 10 | 1 | 4 | . | . | . | . | . | . | . | . | . | 4 | 1 | . | . | . | . | . | . | |||||||
| Small Pearl-bordered Fritillary | 33 | . | . | . | . | . | 2 | . | 16 | 12 | 1 | . | . | . | . | . | . | . | . | . | |||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||||
| Silver-washed Fritillary | 116 | . | . | . | . | . | . | . | . | . | . | . | 24 | 37 | 20 | 18 | 13 | 3 | 1 | . | |||||||
| Marsh Fritillary | 5 | . | . | . | . | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 184 | 5 | 9 | 10 | 9 | 7 | 6 | 2 | 5 | . | . | . | . | 10 | 1 | 18 | 33 | 33 | 23 | 2 | |||||||
| Marbled White | 156 | . | . | . | . | . | . | . | . | 2 | 28 | 38 | 60 | 24 | 4 | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 293 | . | . | . | . | . | . | . | . | . | . | . | 27 | 87 | 55 | 61 | 47 | 16 | . | . | |||||||
| Meadow Brown | 2404 | . | . | . | . | . | . | 4 | 73 | 414 | 681 | 467 | 435 | 212 | 69 | 30 | 6 | 3 | . | . | |||||||
| Ringlet | 271 | . | . | . | . | . | . | . | . | . | 68 | 76 | 72 | 37 | 12 | 5 | . | . | . | . | |||||||