
| 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 | 129 | . | . | . | . | . | . | . | . | . | 4 | 4 | 30 | 33 | 29 | 16 | 4 | 1 | . | . | . | ||||||
| Large Skipper | 136 | . | . | . | . | . | . | . | 4 | 34 | 25 | 16 | 2 | 11 | . | 1 | . | . | . | . | . | ||||||
| Grizzled Skipper | 32 | . | . | 3 | . | . | 1 | 13 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 68 | 4 | 5 | 4 | 5 | 7 | . | . | . | . | . | . | 1 | . | . | 10 | 8 | . | 12 | 3 | . | ||||||
| Large White | 19 | . | . | . | . | 1 | . | . | . | . | . | . | 2 | 3 | 5 | 3 | 2 | . | . | . | . | ||||||
| Small White | 32 | . | 1 | 4 | 1 | 1 | 1 | . | . | . | . | . | 3 | 6 | 5 | 4 | 4 | . | . | 1 | . | ||||||
| Green-veined White | 124 | . | 3 | 5 | 3 | 4 | 1 | 1 | 2 | 1 | . | 1 | 5 | 5 | 13 | 21 | 16 | 16 | 3 | 5 | 2 | ||||||
| Orange Tip | 11 | . | 2 | 4 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brown Hairstreak | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | ||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Small Copper | 48 | . | . | . | . | . | . | 1 | 2 | 4 | . | . | 1 | . | 1 | 5 | 8 | 4 | 5 | 3 | 2 | ||||||
| Brown Argus | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | ||||||
| Common Blue | 84 | . | . | . | . | . | . | . | 7 | 4 | 5 | . | . | . | . | 5 | 20 | 13 | 5 | 4 | . | ||||||
| Holly Blue | 4 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||
| White Admiral | 4 | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 34 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | 2 | . | 12 | 9 | 1 | ||||||
| Painted Lady | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 1 | . | ||||||
| Small Tortoiseshell | 26 | 2 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | 5 | 4 | . | 4 | 1 | 2 | 1 | . | ||||||
| Peacock | 160 | 5 | 8 | 8 | 7 | 4 | 1 | 1 | . | 1 | . | . | 3 | 13 | 48 | 27 | 34 | . | 1 | . | . | ||||||
| Comma | 99 | 5 | 7 | 6 | . | . | . | . | . | . | . | . | . | . | . | 2 | 5 | . | 21 | 22 | 6 | ||||||
| Silver-washed Fritillary | 40 | . | . | . | . | . | . | . | . | . | . | 4 | 5 | 3 | 4 | 16 | 5 | . | . | . | . | ||||||
| Marsh Fritillary | 5 | . | . | . | . | . | . | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 266 | . | 3 | 8 | 1 | 8 | 3 | 4 | 6 | 12 | 4 | 1 | 13 | 16 | 14 | 5 | 12 | 33 | 25 | 25 | 10 | ||||||
| Marbled White | 9 | . | . | . | . | . | . | . | . | 1 | 1 | 3 | 1 | . | . | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 947 | . | . | . | . | . | . | . | . | . | . | . | 62 | 97 | 183 | 351 | 230 | 14 | . | . | . | ||||||
| Meadow Brown | 723 | . | . | . | . | . | . | . | 1 | 28 | 71 | 121 | 100 | 87 | 50 | 57 | 34 | 18 | 6 | . | . | ||||||
| Small Heath | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | ||||||
| Ringlet | 788 | . | . | . | . | . | . | . | . | 2 | 144 | 166 | 175 | 55 | 18 | 4 | 1 | . | . | . | . | ||||||