
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 2 | . | . | . | . | . | |||||
| Large Skipper | . | . | . | . | . | . | . | . | 2 | . | . | 2 | 4 | . | 2 | . | . | . | . | . | . | |||||
| Purple Hairstreak | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 6 | . | 4 | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | |||||
| Common Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | . | 2 | 4 | . | . | |||||
| White Admiral | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | . | . | . | . | . | . | . | |||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 4 | 4 | 2 | . | . | |||||
| Small Pearl-bordered Fritillary | . | . | . | . | . | 2 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | . | . | 4 | 2 | 4 | 10 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | . | 4 | 8 | 40 | 20 | 52 | 88 | 36 | 24 | 6 | 2 | . | |||||
| Wall Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | 6 | 6 | 16 | 18 | 16 | 12 | 8 | . | . | . | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | 4 | 14 | 10 | 22 | 32 | 40 | 20 | 16 | 10 | 10 | 4 | 2 | . | |||||
| Ringlet | . | . | . | . | . | . | . | . | . | 12 | 2 | 24 | 18 | 6 | 2 | 2 | . | . | . | . | . | |||||