
| 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 | 895 | . | . | . | . | . | . | . | . | . | . | 16 | 32 | 204 | 472 | 125 | 28 | 6 | . | . | . | . | |||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||
| Large Skipper | 11 | . | . | . | . | . | . | . | . | 5 | 2 | 3 | 2 | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 2 | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 8 | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | |||||
| Large White | 3 | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | 1 | . | 1 | 2 | . | . | . | . | |||||
| Small White | 23 | . | 1 | 1 | 1 | . | 2 | 1 | . | 1 | . | . | . | . | 4 | 2 | 3 | 3 | 2 | 1 | 1 | . | |||||
| Green-veined White | 21 | . | . | . | 2 | 3 | 3 | . | . | . | . | . | 1 | 3 | 2 | 3 | 3 | . | . | . | . | . | |||||
| Orange Tip | 2 | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 12 | . | . | . | 2 | 4 | 4 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | |||||
| Small Blue | 1 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Brown Argus | 153 | . | . | . | 25 | 30 | 20 | 9 | 6 | 1 | 1 | 1 | . | . | . | 2 | 1 | 26 | 9 | 2 | 1 | . | |||||
| Common Blue | 186 | . | . | . | 2 | 12 | 11 | 15 | 19 | 12 | 8 | 1 | . | . | 2 | 4 | 15 | 41 | 17 | 3 | 2 | 1 | |||||
| Chalk-hill Blue | 32 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 8 | 6 | 7 | 1 | . | . | . | |||||
| Adonis Blue | 126 | . | . | . | . | . | 7 | 14 | 13 | 9 | 6 | 2 | 2 | . | . | . | . | 4 | 17 | 14 | 16 | 8 | |||||
| Holly Blue | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||
| Small Tortoiseshell | 58 | 2 | 2 | . | . | . | . | . | . | 3 | 9 | 16 | 9 | 3 | . | 1 | 5 | 6 | . | 7 | . | . | |||||
| Peacock | 9 | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | 1 | . | . | . | . | |||||
| Dark Green Fritillary | 9 | . | . | . | . | . | . | . | . | . | 1 | 3 | 2 | 2 | 1 | . | . | . | . | . | . | . | |||||
| Marsh Fritillary | NI | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 23 | . | . | 1 | . | . | . | 1 | 1 | 3 | 1 | 1 | 1 | 1 | . | . | . | . | 4 | 1 | 1 | . | |||||
| Wall Brown | 16 | . | . | . | 1 | 1 | . | . | 1 | . | . | . | . | . | . | . | 4 | 3 | . | 1 | . | . | |||||
| Marbled White | 170 | . | . | . | . | . | . | . | . | . | 2 | 50 | 45 | 35 | 30 | 15 | 1 | 1 | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 87 | . | . | . | . | . | . | . | . | . | . | . | 3 | 6 | 15 | 22 | 15 | 13 | 1 | . | . | . | |||||
| Meadow Brown | 657 | . | . | . | . | . | . | . | . | 10 | 8 | 77 | 86 | 107 | 117 | 128 | 42 | 38 | 4 | . | . | . | |||||
| Small Heath | 108 | . | . | . | 3 | 4 | 4 | 4 | 13 | 19 | 6 | 9 | 3 | 1 | 5 | 1 | . | 12 | 9 | 3 | . | . | |||||
| Ringlet | 23 | . | . | . | . | . | . | . | . | . | . | 6 | 4 | 3 | 4 | . | . | . | . | . | . | . | |||||
| Silver Y | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Mother Shipton | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Burnet Companion | NI | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||