Nedan visas alla månader då någon backsvala fångats under vald säsong.
| augusti | |
|---|---|
| 1 | - |
| 2 | - |
| 3 | 1 |
| 4 | - |
| 5 | - |
| 6 | - |
| 7 | - |
| 8 | 1 |
| 9 | 2 |
| 10 | - |
| 11 | 1 |
| 12 | 8 |
| 13 | 1 |
| 14 | - |
| 15 | - |
| 16 | - |
| 17 | - |
| 18 | - |
| 19 | 1 |
| 20 | 2 |
| 21 | - |
| 22 | 7 |
| 23 | 1 |
| 24 | - |
| 25 | - |
| 26 | - |
| 27 | - |
| 28 | - |
| 29 | - |
| 30 | 6 |
| 31 | 23 |
| Summa | 54 |
| Dagar | 12 |
| september | |
|---|---|
| 1 | 2 |
| 2 | 6 |
| 3 | - |
| 4 | - |
| 5 | - |
| 6 | - |
| 7 | - |
| 8 | 1 |
| 9 | 1 |
| 10 | - |
| 11 | - |
| 12 | - |
| 13 | 1 |
| 14 | - |
| 15 | - |
| 16 | - |
| 17 | - |
| 18 | - |
| 19 | - |
| 20 | - |
| 21 | - |
| 22 | - |
| 23 | - |
| 24 | - |
| 25 | - |
| 26 | - |
| 27 | - |
| 28 | - |
| 29 | - |
| 30 | - |
| - | - |
| Summa | 11 |
| Dagar | 5 |