Annual report.
| Nest box 12.
2003. Built-in observation box The nest box northerly |
|
| During the last days of the common swift season there will be stay the night for 9 times into the nest box. | |
| 19-07 | 1 common swift stays the night. |
| 21-07 | 11:23 common swift sits in the exit, while outside there are non-breeders. |
| 24-07 | 21:40 Common Swift leaves box. 21:59 Common Swift goes into box. |
| 28-07 | common swift don’t return at night. |