
| 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 | . | . | . | . | . | . | . | . | 2 | 50 | 100 | 34 | 26 | 4 | 10 | 2 | . | . | . | . | ||||||
| Large Skipper | . | . | . | . | . | 2 | 2 | 12 | 4 | 4 | 2 | . | . | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | . | . | . | 2 | 8 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Grizzled Skipper | . | . | 4 | 10 | 14 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 2 | . | . | . | . | . | 2 | . | . | . | . | . | . | 2 | 2 | . | 32 | 20 | 34 | 10 | ||||||
| Large White | . | . | . | . | 6 | . | 4 | . | . | . | . | 2 | 2 | . | . | 2 | . | 2 | . | . | ||||||
| Small White | . | . | . | . | . | . | . | 6 | . | . | . | 14 | 20 | 28 | 46 | 38 | 24 | 4 | 8 | . | ||||||
| Green-veined White | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 10 | 6 | 4 | 2 | . | . | ||||||
| Orange Tip | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | 2 | 6 | . | 4 | 14 | 12 | 2 | . | . | ||||||
| Small Blue | . | . | . | 2 | 124 | 52 | 18 | 10 | 2 | . | 18 | 30 | 30 | . | 16 | . | . | . | . | . | ||||||
| Brown Argus | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | 8 | 2 | 6 | 8 | 8 | 6 | 2 | ||||||
| Common Blue | . | . | . | . | 2 | 12 | 4 | 22 | 4 | 4 | . | . | . | 10 | 8 | 8 | 18 | 10 | 12 | 16 | ||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | 8 | 44 | 108 | 240 | 250 | 210 | 140 | 144 | 22 | 6 | ||||||
| Adonis Blue | . | . | . | . | . | 20 | 20 | 12 | 2 | . | . | 2 | . | . | . | . | 8 | 2 | 4 | 8 | ||||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 2 | . | . | . | . | . | . | . | . | . | . | . | 4 | . | 2 | . | . | 2 | . | 2 | ||||||
| Peacock | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | . | . | . | . | . | ||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | 4 | 24 | 14 | 44 | 10 | 22 | 4 | 8 | . | . | . | . | . | ||||||
| Marsh Fritillary | . | . | . | . | 28 | 8 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | ||||||
| Marbled White | . | . | . | . | . | . | . | . | 38 | 66 | 60 | 6 | 12 | . | . | . | . | . | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | 20 | 48 | 38 | 50 | 42 | 24 | 152 | 216 | 108 | 76 | 170 | 88 | 62 | ||||||
| Small Heath | . | . | . | . | 46 | 114 | 144 | 310 | 330 | 174 | 176 | 20 | 16 | 16 | 38 | 50 | 48 | 108 | 84 | 56 | ||||||
| Ringlet | . | . | . | . | . | . | . | . | 2 | . | 4 | . | . | . | . | . | . | . | . | . | ||||||