
| 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 | 96 | . | . | . | . | . | . | . | . | . | . | 9 | 29 | 23 | 6 | 10 | . | . | . | . | . | ||||||
| Essex Skipper | 3 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | ||||||
| Large Skipper | 46 | . | . | . | . | . | . | . | . | 2 | 21 | 7 | . | 4 | 7 | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | ||||||
| Brimstone | 189 | 2 | 15 | . | 18 | 7 | 13 | 10 | 10 | 2 | 1 | . | . | 5 | 8 | 16 | 22 | 11 | 4 | 7 | 12 | ||||||
| Large White | 11 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 5 | 2 | . | . | . | 1 | ||||||
| Small White | 152 | . | . | . | . | . | 2 | . | . | . | . | 6 | 16 | 6 | 8 | 3 | 1 | 26 | 19 | 12 | 10 | ||||||
| Green-veined White | 32 | . | 1 | 1 | . | 1 | 5 | 2 | . | . | . | 2 | . | . | 5 | 2 | 1 | 3 | 3 | . | 1 | ||||||
| Orange Tip | 40 | 12 | 8 | 5 | 4 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 3 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | ||||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | ||||||
| Common Blue | 29 | . | . | . | . | . | . | . | 2 | 3 | . | . | . | 1 | 1 | 5 | 2 | 13 | . | . | . | ||||||
| Holly Blue | 3 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| White Admiral | 9 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | 1 | 2 | . | . | . | . | . | ||||||
| Red Admiral | 51 | . | . | . | . | . | . | . | . | . | . | 3 | 2 | . | 1 | 2 | 2 | 16 | 8 | 2 | 3 | ||||||
| Painted Lady | 68 | . | . | . | . | 1 | 3 | . | 1 | . | . | 3 | . | . | 2 | 5 | 8 | 18 | 10 | 1 | 2 | ||||||
| Small Tortoiseshell | 77 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 6 | 11 | 34 | 12 | . | . | ||||||
| Peacock | 60 | 6 | 9 | 2 | 2 | 1 | 2 | . | 1 | . | . | . | . | . | 5 | 14 | 3 | 2 | 2 | . | 1 | ||||||
| Comma | 63 | 3 | 3 | . | 2 | . | . | . | . | . | 2 | 1 | . | . | . | . | . | 2 | 4 | 6 | 27 | ||||||
| Small Pearl-bordered Fritillary | 6 | . | . | . | . | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 15 | . | . | . | . | 2 | 12 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | 186 | . | . | . | . | . | . | . | . | 1 | 19 | 24 | 38 | 11 | 32 | 22 | 5 | 3 | . | . | . | ||||||
| Speckled Wood | 188 | 1 | 4 | 10 | 4 | 4 | 7 | 6 | 7 | 17 | 3 | . | 10 | 1 | 3 | 11 | 3 | 18 | 22 | 5 | 5 | ||||||
| Marbled White | 12 | . | . | . | . | . | . | . | . | . | . | 4 | 3 | . | 1 | . | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 334 | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 17 | 114 | 118 | 50 | 26 | . | . | . | ||||||
| Meadow Brown | 352 | . | . | . | . | . | . | . | . | 3 | 22 | 43 | 97 | 14 | 59 | 23 | 10 | 7 | 1 | . | 1 | ||||||
| Small Heath | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | ||||||
| Ringlet | 373 | . | . | . | . | . | . | . | . | . | 7 | 134 | 59 | 48 | 25 | 4 | . | . | . | . | . | ||||||
| Argent & Sable | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Broad-bordered Bee Hawk-moth | NI | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Silver Y | NI | . | . | . | . | . | . | . | . | 2 | . | 1 | . | . | 4 | 6 | . | . | 1 | . | 1 | ||||||