
| 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 Skipper | 132 | . | . | . | . | . | . | . | . | . | . | 21 | 26 | 37 | 14 | 14 | 1 | . | . | . | . | . | |||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | 2 | . | . | . | . | . | . | . | |||||
| Large Skipper | 2 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | 2 | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | 46 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 8 | 8 | 6 | 3 | 9 | 2 | |||||
| Brimstone | 51 | 6 | . | . | 4 | 2 | 3 | 5 | 1 | 2 | 3 | . | . | . | 2 | 4 | 4 | 4 | 2 | 3 | 1 | . | |||||
| Large White | 29 | . | . | . | . | . | . | . | 2 | 1 | . | 1 | 1 | 2 | 8 | 5 | 1 | 4 | 4 | 1 | . | . | |||||
| Small White | 245 | 1 | . | . | . | 3 | 5 | 1 | 4 | 1 | . | 5 | 5 | 15 | 15 | 20 | 21 | 42 | 49 | 25 | 18 | 9 | |||||
| Green-veined White | 22 | . | . | . | 3 | 4 | 1 | 1 | . | . | 1 | 2 | 2 | 2 | 1 | . | . | . | 1 | 1 | 1 | 1 | |||||
| Orange Tip | 6 | . | . | 1 | . | . | 4 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | |||||
| Small Copper | 47 | . | . | . | . | . | 1 | . | 2 | . | . | 5 | . | 6 | 4 | 9 | 4 | 3 | 3 | 4 | 4 | 2 | |||||
| Small Blue | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brown Argus | 46 | . | . | . | . | . | 1 | 1 | 1 | . | 1 | . | 1 | 1 | 1 | 8 | 9 | 11 | 6 | 2 | 1 | . | |||||
| Common Blue | 124 | . | . | . | . | . | . | . | 7 | 5 | 7 | . | . | . | 4 | 8 | 20 | 15 | 19 | 13 | 11 | 11 | |||||
| Chalk-hill Blue | 12 | . | . | . | . | . | . | . | . | . | . | . | . | 5 | . | 3 | 1 | 3 | . | . | . | . | |||||
| Adonis Blue | 65 | . | . | . | . | . | . | . | 10 | . | 1 | . | . | . | . | . | 17 | 16 | 13 | 2 | . | . | |||||
| Red Admiral | 11 | . | . | . | . | . | . | . | . | 1 | . | 3 | . | 1 | . | . | . | . | . | 4 | . | . | |||||
| Painted Lady | 11 | . | . | . | . | . | . | . | . | 4 | 3 | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||
| Small Tortoiseshell | 348 | 7 | 16 | 16 | 5 | 9 | 4 | 1 | . | 4 | 9 | 15 | 13 | 8 | 5 | 29 | 47 | 15 | 16 | 22 | 11 | 1 | |||||
| Peacock | 60 | 4 | 8 | 4 | 6 | 6 | 4 | 2 | 1 | . | . | . | . | 4 | 1 | 12 | 5 | . | . | . | . | . | |||||
| Comma | 16 | . | 1 | 1 | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | . | 1 | |||||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Marsh Fritillary | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Speckled Wood | 18 | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | . | . | 2 | 4 | 2 | 1 | 1 | 2 | |||||
| Marbled White | 58 | . | . | . | . | . | . | . | . | . | . | 21 | 10 | 8 | 1 | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 101 | . | . | . | . | . | . | . | . | . | . | 7 | 15 | 30 | 16 | 13 | 14 | 3 | . | . | . | . | |||||
| Meadow Brown | 642 | . | . | . | . | . | . | . | . | 1 | 7 | 67 | 66 | 104 | 119 | 89 | 70 | 35 | 13 | 6 | 1 | . | |||||
| Small Heath | 77 | . | . | . | . | . | 1 | 1 | 3 | 5 | 7 | 5 | 6 | 3 | . | . | 1 | 23 | 10 | . | . | . | |||||
| Ringlet | 77 | . | . | . | . | . | . | . | . | . | . | 15 | 11 | 7 | 1 | . | . | . | . | . | . | . | |||||