
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | . | . | . | . | 4 | 80 | 12 | 16 | 6 | 4 | 4 | . | . | . | |||||
| Large Skipper | . | . | . | . | . | . | . | . | 4 | . | 6 | 6 | 4 | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | . | . | . | . | . | 26 | 12 | 12 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | . | . | . | 2 | 32 | 88 | 4 | 12 | 10 | 4 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | . | . | 4 | 2 | . | 2 | 8 | 2 | . | . | . | . | . | . | . | . | . | 4 | 2 | . | . | |||||
| Large White | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small White | . | . | . | . | . | 2 | . | . | . | . | . | 2 | . | 4 | 4 | 6 | 16 | 16 | 6 | 14 | 4 | |||||
| Green-veined White | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||||
| Orange Tip | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | 2 | |||||
| Small Blue | . | . | . | . | . | 22 | 66 | 28 | 98 | 60 | 16 | 8 | . | 2 | 2 | . | . | . | . | . | . | |||||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 8 | 10 | 4 | 2 | |||||
| Common Blue | . | . | . | . | . | . | . | 2 | 6 | 2 | 12 | 12 | . | . | . | 4 | 12 | 20 | 60 | 52 | 22 | |||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | 90 | 76 | 406 | 226 | 364 | 144 | 36 | 2 | |||||
| Adonis Blue | . | . | . | . | . | . | . | 14 | 6 | 20 | . | . | . | . | . | . | . | . | 8 | 8 | 16 | |||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | . | 4 | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | 4 | 78 | 294 | 134 | |||||
| Peacock | . | . | 2 | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | 2 | . | . | . | . | |||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | 2 | 36 | 48 | 14 | 6 | 2 | 4 | . | . | . | . | |||||
| Marsh Fritillary | . | . | . | . | . | . | . | 8 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | . | 46 | 106 | 6 | . | . | . | . | . | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 4 | 14 | 60 | 106 | 76 | 48 | 162 | 232 | 360 | 262 | 282 | 116 | |||||
| Small Heath | . | . | . | . | . | 2 | 32 | 82 | 62 | 146 | 136 | 242 | 412 | 26 | 6 | 14 | 2 | 80 | 92 | 26 | . | |||||
| Ringlet | . | . | . | . | . | . | . | . | . | . | . | 4 | 8 | 2 | . | . | . | . | . | . | . | |||||