
| 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 | 83 | . | . | . | . | . | . | . | 9 | . | . | . | 11 | . | . | . | . | . | |||||||||
| Small Skipper | 71 | . | . | . | . | . | . | . | . | 23 | 12 | 5 | . | . | . | . | . | . | |||||||||
| Essex Skipper | 12 | . | . | . | . | . | . | . | . | 1 | 1 | 5 | . | 1 | . | . | . | . | |||||||||
| Large Skipper | NI | . | . | . | . | . | . | 22 | 16 | 1 | 1 | . | 6 | . | . | . | . | . | |||||||||
| Dingy Skipper | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | NI | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 18 | . | 1 | 1 | 1 | . | 1 | 1 | . | 1 | 3 | 1 | 2 | 1 | . | . | 1 | . | |||||||||
| Large White | 61 | . | 1 | 3 | . | . | 1 | 2 | 7 | 5 | 13 | 4 | 4 | 2 | 4 | 2 | 1 | 1 | |||||||||
| Small White | 235 | . | . | 2 | . | . | . | . | 9 | 25 | 24 | 10 | 10 | 33 | 23 | 22 | 28 | 15 | |||||||||
| Green-veined White | 64 | . | 3 | 5 | 6 | 3 | 1 | 2 | 1 | . | 3 | 4 | 6 | 4 | 1 | 8 | . | 2 | |||||||||
| Orange Tip | NI | . | 8 | 6 | 4 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 12 | . | . | . | . | . | . | . | . | 2 | 1 | . | 5 | 2 | 2 | . | . | . | |||||||||
| Black Hairstreak | NI | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 3 | 12 | |||||||||
| Brown Argus | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | 2 | |||||||||
| Common Blue | 145 | . | . | . | . | 1 | 1 | 10 | . | . | 6 | 16 | 33 | 34 | 13 | 2 | 4 | 4 | |||||||||
| White Admiral | 5 | . | . | . | . | . | . | . | 4 | 2 | 1 | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 17 | . | . | . | . | . | . | 1 | . | 1 | 2 | . | . | . | 1 | 5 | . | 6 | |||||||||
| Painted Lady | 36 | . | . | . | . | . | 4 | 4 | 2 | 3 | 2 | 6 | 4 | 2 | 1 | . | . | 1 | |||||||||
| Small Tortoiseshell | 91 | 4 | 4 | . | . | 2 | 2 | 14 | 6 | 5 | 3 | 8 | 5 | 9 | 1 | 1 | 1 | . | |||||||||
| Peacock | 51 | 4 | 3 | . | . | 1 | . | 1 | . | 2 | 4 | 13 | 6 | 1 | . | . | . | . | |||||||||
| Comma | 23 | 4 | . | . | . | 2 | . | . | 7 | . | 1 | 1 | . | . | . | 6 | 4 | 2 | |||||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Speckled Wood | 82 | . | 4 | . | 1 | 3 | 5 | 11 | . | 1 | 1 | 2 | 2 | 8 | 6 | 11 | 2 | 5 | |||||||||
| Wall Brown | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | |||||||||
| Marbled White | NI | . | . | . | . | . | . | . | 53 | 41 | 10 | . | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 126 | . | . | . | . | . | . | . | 1 | 6 | 21 | 30 | 35 | 4 | . | . | . | . | |||||||||
| Meadow Brown | 364 | . | . | . | . | . | . | 19 | 142 | 83 | 63 | 28 | 14 | 7 | 2 | 1 | . | . | |||||||||
| Small Heath | 3 | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | 1 | . | . | . | |||||||||
| Ringlet | 305 | . | . | . | . | . | . | . | 167 | 112 | 42 | 10 | 3 | . | . | . | . | . | |||||||||