
| 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 | NI | . | . | . | 2 | 5 | 15 | 9 | . | 70 | 85 | 42 | 8 | 14 | . | . | . | . | |||||||||
| Large Skipper | 106 | . | . | . | . | . | 10 | 13 | 28 | 11 | 11 | . | . | 1 | . | . | . | . | |||||||||
| Dingy Skipper | 141 | 14 | 32 | 57 | 19 | 15 | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 139 | 26 | 38 | 36 | 5 | 9 | 7 | 3 | 2 | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 199 | 35 | 6 | 9 | 21 | 8 | 6 | 8 | 2 | 7 | 9 | 14 | 30 | 13 | 7 | . | . | . | |||||||||
| Large White | 42 | . | . | 3 | 3 | 9 | . | . | 7 | 6 | 9 | 2 | 2 | . | . | 1 | . | . | |||||||||
| Small White | 189 | 2 | . | 6 | 8 | . | 4 | 1 | . | 39 | 23 | 23 | 28 | 16 | 6 | 3 | 1 | . | |||||||||
| Green-veined White | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Orange Tip | 3 | 1 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 26 | 1 | 2 | 5 | 5 | 6 | 4 | 1 | 1 | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||||||||
| Small Copper | 326 | 8 | 19 | 30 | 13 | 7 | 4 | 3 | 2 | 22 | 24 | 23 | 47 | 20 | 18 | 10 | 6 | 6 | |||||||||
| Brown Argus | NI | . | . | . | 5 | . | 7 | 4 | 1 | . | 1 | 2 | 9 | 1 | 16 | 2 | . | . | |||||||||
| Common Blue | 732 | . | 4 | 47 | 73 | 56 | 53 | 60 | 28 | 6 | . | 15 | 63 | 78 | 62 | 8 | . | . | |||||||||
| Chalk-hill Blue | 21 | . | . | . | . | . | . | . | . | . | . | 5 | 9 | 7 | . | . | . | . | |||||||||
| Holly Blue | 17 | . | . | . | . | . | . | . | . | 3 | 6 | 5 | 1 | 1 | . | . | . | . | |||||||||
| White Admiral | 8 | . | . | . | . | . | . | . | 2 | 5 | . | 1 | . | . | . | . | . | . | |||||||||
| Purple Emperor | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 21 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 4 | 6 | 1 | |||||||||
| Painted Lady | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Tortoiseshell | 40 | . | . | . | . | . | 3 | 5 | 19 | 5 | . | . | 1 | 2 | . | 2 | . | . | |||||||||
| Peacock | NI | 4 | 1 | 2 | . | 1 | . | . | . | 8 | 20 | 5 | 11 | 1 | . | . | 3 | 3 | |||||||||
| Comma | 41 | 1 | . | . | . | . | . | . | . | 8 | 8 | 10 | 4 | 2 | . | 1 | 3 | 2 | |||||||||
| Small Pearl-bordered Fritillary | 22 | . | . | . | . | . | 8 | 6 | 7 | 1 | . | . | . | . | . | . | . | . | |||||||||
| Pearl-bordered Fritillary | 6 | . | . | 2 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Dark Green Fritillary | 146 | . | . | . | . | . | . | 4 | 33 | 44 | 27 | 18 | 11 | 6 | . | . | . | . | |||||||||
| Speckled Wood | 105 | 13 | 2 | 5 | 5 | 5 | . | 5 | 7 | 7 | . | . | 3 | 5 | 13 | 2 | . | 1 | |||||||||
| Wall Brown | 143 | . | 3 | 17 | 11 | 7 | . | . | . | . | . | 5 | 27 | 35 | 1 | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 840 | . | . | . | . | . | . | . | . | 97 | 182 | 136 | 209 | 108 | . | . | . | . | |||||||||
| Meadow Brown | 2892 | . | . | . | 1 | 5 | 64 | 112 | 196 | 225 | 318 | 301 | 449 | 426 | 129 | 31 | . | . | |||||||||
| Small Heath | 911 | . | 23 | 107 | 105 | 91 | 97 | 143 | 202 | 34 | 23 | 2 | 2 | 4 | 23 | 7 | . | 2 | |||||||||
| Ringlet | 74 | . | . | . | . | . | . | . | . | 26 | 33 | 15 | . | . | . | . | . | . | |||||||||
| Unknown Fritillary | NI | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||