
| 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 | ||||||||||||||||||||||||||
| Chequered Skipper | NI | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large Skipper | 18 | . | . | . | . | . | . | . | 2 | 1 | 2 | 5 | 5 | 3 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | 93 | . | . | . | . | 22 | 35 | 17 | 12 | 7 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 43 | . | . | 2 | 4 | 2 | . | 6 | 3 | . | . | . | . | . | . | . | 3 | 8 | 11 | . | . | ||||||
| Large White | 36 | . | . | . | . | 1 | 6 | . | 1 | . | . | 1 | 2 | 1 | . | 3 | 15 | 3 | 2 | 1 | . | ||||||
| Small White | 9 | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | 3 | . | ||||||
| Green-veined White | 101 | . | . | . | 4 | 6 | 14 | 8 | 4 | 1 | . | . | . | 1 | . | 21 | 29 | 3 | 1 | . | 5 | ||||||
| Orange Tip | 32 | . | . | 4 | 2 | 11 | 9 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 22 | . | . | 3 | 5 | 4 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| White-letter Hairstreak | NI | 18 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 34 | . | . | . | . | 1 | 12 | . | . | . | . | . | . | . | . | 1 | 7 | 3 | 9 | 1 | . | ||||||
| Northern Brown Argus | 172 | . | . | . | . | . | . | . | 11 | 59 | 16 | 23 | 29 | 16 | 11 | 6 | 1 | . | . | . | . | ||||||
| Common Blue | 92 | . | . | . | . | 1 | 1 | 6 | 12 | 5 | 2 | 6 | 4 | 2 | 2 | 1 | 2 | 21 | 26 | 1 | . | ||||||
| Red Admiral | 24 | . | . | . | . | . | . | . | 3 | 1 | . | 1 | 3 | 1 | . | 2 | 3 | 3 | 1 | . | 4 | ||||||
| Painted Lady | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 3 | . | ||||||
| Small Tortoiseshell | 88 | . | 9 | 3 | 1 | . | 1 | 2 | . | . | . | 1 | 6 | 13 | 18 | 4 | 3 | . | 2 | 6 | 5 | ||||||
| Peacock | 323 | . | 14 | 9 | 1 | 1 | 2 | . | 1 | . | . | . | . | . | 1 | 47 | 101 | 100 | 23 | 3 | 1 | ||||||
| Small Pearl-bordered Fritillary | 123 | . | . | . | . | . | . | 3 | 50 | 52 | 12 | 6 | . | . | . | . | . | . | . | . | . | ||||||
| Pearl-bordered Fritillary | 230 | . | . | . | 42 | 65 | 65 | 57 | 14 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| High Brown Fritillary | 451 | . | . | . | . | . | . | . | . | . | 9 | 62 | 97 | 118 | 71 | 53 | 16 | 16 | 9 | . | . | ||||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 47 | . | . | 3 | 5 | 1 | 1 | . | 4 | 1 | 2 | . | . | . | . | 3 | . | 8 | 7 | 2 | 2 | ||||||
| Wall Brown | 88 | . | . | . | . | 2 | 27 | 6 | . | 2 | . | . | . | . | . | . | 1 | 17 | 20 | 4 | 5 | ||||||
| Grayling | 9 | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | 2 | 1 | 2 | . | 1 | . | . | ||||||
| Meadow Brown | 1052 | . | . | . | . | . | . | . | . | . | 12 | 60 | 178 | 295 | 228 | 204 | 42 | 26 | 7 | . | . | ||||||
| Small Heath | 308 | . | . | . | . | 35 | 67 | 93 | 62 | 34 | 5 | 3 | 2 | 3 | 2 | 2 | . | . | . | . | . | ||||||