
| 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 | 173 | . | . | . | . | . | . | . | . | . | . | . | . | 11 | . | . | . | . | . | . | . | ||||||
| Small Skipper | 173 | . | . | . | . | . | . | . | . | . | . | 6 | 18 | . | 23 | 19 | 7 | . | . | . | . | ||||||
| Large Skipper | 133 | . | . | . | . | . | . | 1 | 6 | 22 | 48 | 24 | 15 | 12 | 6 | . | . | . | . | . | . | ||||||
| Dingy Skipper | 14 | . | . | . | . | . | . | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | 4 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | NI | 1 | 1 | 26 | 27 | 10 | 5 | 5 | 4 | 4 | . | . | . | 8 | 7 | 20 | 4 | 3 | 1 | . | . | ||||||
| Large White | 16 | . | . | . | . | 1 | . | . | . | . | . | . | . | 1 | 3 | 1 | 1 | 1 | . | . | . | ||||||
| Small White | 53 | . | . | . | . | . | . | . | . | . | . | . | 2 | 14 | 5 | 19 | 8 | 1 | . | 2 | . | ||||||
| Green-veined White | 27 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 11 | 8 | 2 | 6 | . | . | ||||||
| Orange Tip | NI | 1 | 1 | 10 | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Small Copper | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 8 | 2 | 1 | . | . | ||||||
| Brown Argus | 17 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 3 | 14 | 2 | . | . | . | ||||||
| Common Blue | 30 | . | . | . | . | . | . | 1 | 2 | 9 | 2 | . | 1 | 1 | 1 | 3 | 9 | 3 | 1 | . | 1 | ||||||
| Holly Blue | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 5 | . | . | . | . | . | ||||||
| White Admiral | 27 | . | . | . | . | . | . | . | . | . | 2 | 6 | 7 | 2 | . | . | . | . | . | . | . | ||||||
| Red Admiral | 7 | . | . | . | . | . | . | 1 | . | . | 1 | 1 | 1 | 2 | . | . | . | 1 | . | . | . | ||||||
| Small Tortoiseshell | 6 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | ||||||
| Peacock | 29 | 4 | 9 | 8 | 6 | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | ||||||
| Comma | 27 | 2 | 3 | . | . | . | . | 1 | . | . | . | 2 | 1 | 1 | 2 | . | . | . | 3 | . | 1 | ||||||
| Small Pearl-bordered Fritillary | 58 | . | . | . | . | . | . | 4 | 4 | 2 | 3 | 19 | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | NI | . | . | . | . | 11 | 15 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | 9 | . | 36 | 45 | 5 | 37 | 21 | . | . | . | . | ||||||
| Speckled Wood | 268 | 2 | 2 | 1 | 2 | 5 | 8 | 4 | 21 | 14 | 3 | 6 | 5 | 1 | 7 | 18 | 15 | 39 | 12 | 11 | 3 | ||||||
| Marbled White | 99 | . | . | . | . | . | . | . | . | . | 2 | 4 | 8 | 10 | 17 | 1 | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 412 | . | . | . | . | . | . | . | . | . | . | . | . | 22 | 48 | 157 | 118 | . | . | . | . | ||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | 1 | 8 | 36 | 31 | 44 | 22 | 31 | 25 | 26 | 2 | 2 | 1 | . | ||||||
| Small Heath | 10 | . | . | . | . | . | . | . | . | 1 | 3 | 2 | . | . | . | . | . | 3 | . | . | . | ||||||
| Ringlet | 650 | . | . | . | . | . | . | . | . | . | 26 | 62 | 113 | 133 | 64 | 9 | 2 | . | . | . | . | ||||||
| Five-spot Burnet | NI | . | . | . | . | . | . | . | . | . | . | 10 | . | . | . | . | . | . | . | . | . | ||||||
| Argent & Sable | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Drab Looper | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Broad-bordered Bee Hawk-moth | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Burnet Companion | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||