
| 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 | 128 | . | . | . | . | . | . | . | 2 | 5 | 73 | 7 | 3 | 2 | 1 | . | . | . | . | . | |||||||
| Large Skipper | 155 | . | . | . | . | 16 | 27 | 34 | 40 | 10 | 18 | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | NI | . | . | 7.5 | 16 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 56 | 3 | 6.5 | 3.5 | . | 3 | . | . | 4 | 1 | 8 | 1 | 5 | 2 | 3 | . | . | . | . | . | |||||||
| Large White | NI | . | 0.5 | 4.5 | 6 | 2 | . | . | 6 | 2 | 4 | 2 | . | 1 | 1 | 1 | . | . | 1 | . | |||||||
| Small White | 40 | . | . | 2 | 1 | 2 | . | . | 2 | 2 | 3 | 1 | 3 | 2 | 2 | 7 | . | . | 7 | 3 | |||||||
| Green-veined White | 110 | . | 4 | 5.5 | 3 | 3 | . | . | 1 | 5 | 4 | 12 | 15 | 6 | 9 | 6 | 5 | 4 | 7 | 2 | |||||||
| Orange Tip | NI | . | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brown Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | |||||||
| Purple Hairstreak | 23 | . | . | . | . | . | . | . | 11 | 9 | 3 | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 42 | . | . | . | 1 | 2 | 2 | . | 2 | 2 | 4 | 1 | 1 | 2 | 3 | 3 | 5 | 2 | 4 | 5 | |||||||
| Common Blue | 15 | . | . | . | . | . | 2 | 1 | . | . | 1 | . | 2 | 1 | 1 | 2 | 3 | . | . | . | |||||||
| Holly Blue | 10 | . | . | . | 1 | 2 | . | . | . | . | 1 | . | 1 | 2 | 1 | . | . | . | . | . | |||||||
| White Admiral | 86 | . | . | . | . | . | . | 1.5 | 26 | 28 | 24 | . | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | 56 | . | . | . | . | . | . | 0.5 | 2 | 6 | 5 | . | 5 | 4 | 3 | 2 | 5 | 12 | 6 | . | |||||||
| Painted Lady | 6 | . | . | . | 2 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 15 | 1 | 1 | . | . | . | . | . | 1 | . | . | . | 1 | 1 | 3 | 2 | 1 | 1 | . | . | |||||||
| Peacock | 46 | 3 | 3 | 1 | . | . | . | . | . | 1 | 9 | . | 8 | 4 | 4 | . | . | . | . | . | |||||||
| Comma | 31 | . | 1 | . | . | . | . | . | 16 | 6 | 4 | . | . | 2 | . | . | 1 | 1 | . | . | |||||||
| Silver-washed Fritillary | 88 | . | . | . | . | . | . | . | 19 | 27 | 31 | . | . | . | . | . | . | . | . | . | |||||||
| Marsh Fritillary | 5 | . | . | . | . | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 87 | . | . | 3 | 8 | 3 | 3 | . | 4 | 6 | . | 1 | 1 | 8 | 7 | 6 | 6 | 7 | 7 | 1 | |||||||
| Marbled White | 74 | . | . | . | . | . | . | 0.5 | 20 | 35 | 14 | . | . | . | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 370 | . | . | . | . | . | . | . | . | 49 | 214 | 5 | 3 | 1 | . | . | . | . | . | . | |||||||
| Meadow Brown | 481 | . | . | . | . | . | 19 | 84 | 84 | 158 | 81 | 2 | 2 | . | 2 | 1 | . | . | . | . | |||||||
| Small Heath | 10 | . | . | . | . | . | 2 | 0.5 | 3 | . | . | . | 1 | 1 | 1 | 1 | . | . | . | . | |||||||
| Ringlet | 638 | . | . | . | . | . | . | 73.5 | 185 | 207 | 120 | 3 | 2 | . | . | . | . | . | . | . | |||||||