
| 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/Essex Skipper | 100 | . | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | |||||||||
| Small Skipper | 96 | . | . | . | . | . | . | . | . | 38 | 47 | 6 | 2 | . | . | . | . | . | |||||||||
| Large Skipper | 23 | . | . | . | . | 4 | 2 | . | 12 | . | 2 | . | . | . | . | . | . | . | |||||||||
| Dingy Skipper | 60 | . | . | 1 | 24 | 20 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | NI | . | 4 | 3 | 11 | 7 | . | 5 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 22 | . | . | . | . | 2 | . | . | . | . | . | . | 4 | 5 | 2 | 2 | 3 | 1 | |||||||||
| Brimstone | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | |||||||||
| Large White | 15 | . | 1 | . | . | . | . | . | 1 | 1 | . | 1 | 9 | . | 1 | 3 | . | . | |||||||||
| Small White | 26 | . | . | . | . | 1 | . | . | . | . | 7 | 6 | . | 6 | . | . | . | . | |||||||||
| Orange Tip | NI | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 73 | . | . | 4 | 2 | . | 3 | . | . | 1 | 1 | 1 | 1 | 6 | . | . | 11 | 18 | |||||||||
| Brown Argus | 53 | . | . | . | 20 | 6 | . | . | . | . | . | . | 1 | . | 6 | 3 | 5 | . | |||||||||
| Common Blue | 235 | . | . | . | 34 | 70 | 1 | 7 | 2 | . | . | 14 | 1 | 13 | 23 | 5 | 5 | . | |||||||||
| Chalk-hill Blue | 64 | . | . | . | . | . | . | . | . | . | . | 7 | 16 | 24 | 5 | 4 | . | . | |||||||||
| Adonis Blue | 5 | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | 1 | . | |||||||||
| Red Admiral | 11 | . | . | . | 1 | 1 | . | . | 1 | 2 | . | 3 | 3 | . | . | . | . | . | |||||||||
| Painted Lady | 22 | . | . | . | 1 | 4 | 1 | 1 | . | 4 | 4 | 4 | . | . | . | . | . | . | |||||||||
| Small Tortoiseshell | 29 | . | 1 | . | . | . | . | 2 | 1 | 8 | 5 | 1 | . | 1 | 3 | . | . | 2 | |||||||||
| Peacock | NI | 2 | 5 | . | 2 | 1 | . | . | . | . | 3 | 1 | . | 1 | . | . | . | . | |||||||||
| Comma | 2 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | |||||||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | |||||||||
| Silver-washed Fritillary | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||||||
| Marsh Fritillary | 94 | . | . | . | 39 | 32 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Speckled Wood | 4 | . | . | . | . | 1 | . | . | . | . | . | 1 | 1 | . | . | 1 | . | . | |||||||||
| Marbled White | 784 | . | . | . | . | . | . | 14 | 190 | 289 | 241 | 34 | 4 | 1 | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 505 | . | . | . | . | . | . | . | . | 12 | 162 | 102 | 39 | 89 | 10 | . | . | . | |||||||||
| Meadow Brown | 1466 | . | . | . | . | . | 22 | 37 | 144 | 134 | 222 | 237 | 120 | 147 | 78 | 61 | 53 | 20 | |||||||||
| Small Heath | 479 | . | . | 2 | 32 | 54 | 48 | 45 | 51 | 41 | 18 | 8 | . | 5 | 11 | 31 | 51 | 21 | |||||||||
| Ringlet | 12 | . | . | . | . | . | . | . | 4 | 3 | 2 | 2 | . | . | . | . | . | . | |||||||||
| Humming-bird Hawk-moth | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Wood Tiger | NI | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| The Cinnabar | NI | . | . | . | 12 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | |||||||||