
| 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 | 91 | . | . | . | . | . | . | . | . | 12 | . | 29 | 23 | 2 | 8 | . | . | . | |||||||||
| Small Skipper | 87 | . | . | . | . | . | . | . | . | . | 17 | . | . | . | . | . | . | . | |||||||||
| Large Skipper | 88 | . | . | . | . | . | . | 4 | 4 | 4 | 17 | 18 | 10 | 1 | 3 | . | . | . | |||||||||
| Dingy Skipper | NI | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | NI | . | 2 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Large White | 10 | . | . | . | . | . | 2 | . | . | 2 | 1 | 1 | 1 | 5 | 4 | 1 | . | 1 | |||||||||
| Small White | NI | . | . | . | . | . | 1 | . | . | . | . | . | 5 | 9 | 11 | 3 | 3 | . | |||||||||
| Green-veined White | 5 | . | . | . | 1 | . | 1 | . | . | . | 1 | 1 | . | . | . | . | . | . | |||||||||
| Orange Tip | 4 | 1 | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Small Copper | NI | . | . | . | 1 | 1 | 3 | . | 3 | . | . | . | . | 2 | 2 | 4 | 1 | . | |||||||||
| Silver-studded Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Brown Argus | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Common Blue | 72 | . | . | . | . | 1 | . | 27 | 23 | 5 | 4 | . | . | 1 | 1 | 22 | 7 | 5 | |||||||||
| Holly Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| White Admiral | 5 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | |||||||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||||||
| Painted Lady | 4 | . | . | . | . | . | . | 3 | 1 | . | . | . | . | . | . | 1 | . | 1 | |||||||||
| Small Tortoiseshell | 21 | . | . | . | . | . | . | . | . | 1 | 4 | . | . | . | . | 1 | . | . | |||||||||
| Peacock | 4 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Comma | NI | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||||
| Silver-washed Fritillary | 5 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 2 | 3 | 1 | . | . | |||||||||
| Speckled Wood | 76 | . | . | 1 | 2 | . | 1 | 2 | 1 | . | 1 | . | . | 1 | . | 3 | 11 | 6 | |||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | 1 | 2 | 28 | 78 | 59 | 4 | . | . | |||||||||
| Meadow Brown | 270 | . | . | . | . | . | . | 5 | 10 | 49 | 49 | 73 | 59 | 29 | 18 | . | . | 1 | |||||||||
| Small Heath | 1 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||||||
| Ringlet | 44 | . | . | . | . | . | . | . | . | 9 | 8 | 5 | 1 | . | 1 | . | . | . | |||||||||