
| 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 | . | . | . | . | . | . | . | . | . | 20 | 24 | 20 | 18 | . | . | . | . | |||||||||
| Large Skipper | . | . | . | . | . | . | 4 | 8 | 22 | . | . | . | . | . | . | . | . | |||||||||
| Dingy Skipper | . | . | . | 54 | 12 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | . | . | 4 | 64 | 6 | 12 | 6 | 4 | 4 | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | . | . | 2 | 6 | . | 2 | . | 2 | . | . | . | . | 2 | . | 24 | 4 | 4 | |||||||||
| Large White | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | 12 | . | 4 | . | |||||||||
| Small White | . | . | . | . | . | 6 | 2 | . | . | 4 | 6 | 2 | 4 | 2 | . | . | . | |||||||||
| Green-veined White | . | . | 2 | 2 | . | . | . | . | . | . | 12 | 2 | . | . | . | . | . | |||||||||
| Green Hairstreak | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | . | . | . | . | 2 | . | . | . | . | . | . | . | 2 | 4 | . | . | . | |||||||||
| Small Blue | . | . | . | 40 | 6 | 44 | 48 | 8 | 2 | . | . | 2 | . | . | . | . | . | |||||||||
| Brown Argus | . | . | . | 2 | . | 2 | . | . | . | . | . | 2 | . | 4 | . | 4 | 2 | |||||||||
| Common Blue | . | . | . | . | . | 6 | 16 | 14 | 10 | . | . | . | 4 | 2 | 12 | 32 | 22 | |||||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | 8 | 38 | 96 | 216 | 48 | 36 | 50 | 4 | |||||||||
| Adonis Blue | . | . | . | 4 | . | 10 | 4 | 6 | . | . | . | . | . | 4 | . | 12 | 8 | |||||||||
| Painted Lady | . | . | . | . | . | . | . | 2 | . | . | 2 | 2 | 4 | . | . | . | 2 | |||||||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | 8 | 4 | 4 | 8 | . | 10 | 4 | 12 | 12 | |||||||||
| Peacock | . | . | 2 | . | . | . | . | . | . | . | 6 | . | . | 6 | . | . | . | |||||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | 4 | 4 | . | 6 | 10 | . | . | . | . | |||||||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | 6 | . | . | . | . | . | . | |||||||||
| Marsh Fritillary | . | . | . | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Marbled White | . | . | . | . | . | . | . | . | 4 | 20 | 6 | 12 | . | . | . | . | . | |||||||||
| Meadow Brown | . | . | . | . | . | . | . | 50 | 84 | 66 | 148 | 276 | 804 | 326 | 252 | 348 | 166 | |||||||||
| Small Heath | . | . | . | . | 10 | 42 | 106 | 150 | 194 | 94 | 18 | 44 | 10 | 2 | 6 | 6 | 4 | |||||||||
| Ringlet | . | . | . | . | . | . | . | . | 6 | . | . | . | . | . | . | . | . | |||||||||