Annual report.

Nest box 9.           2003.
Built-in observation box
The nest box northerly		  
 
 

We have changed the entrance of nest box 9 and 10. The partition is extending until 2 cm out of the front and there is an extra sensor. See figure and (Photo)

  It doesn't go well with the couple that was next year so successfully. The common swift that comes back on 28-04 is the first one in the colony. At the moment that the common swift on 29-04 at 06:58 leaves he nest box, there are just 2 common swifts into box 10. Because we cannot identify the common swifts it always be the question, if the change at the entrance, or the behave of the common swifts at the end of the season 2002, sleep around of one of the two birds, play apart in this. It is a fact, last year we have 3 common swifts into nest box 9 and 10, and we have now just 2 common swifts into nest box 10.
   
28-04  08:50 common swift comes into the nest box. At 20:49 common swift comes back and stay the night.
29-04  06:58 common swift leaves the nest box and doesn't come back.
   
30-05  during the whole day (12 times) there will be hitch on the entrance. Common swifts don't come into the nest box.
31-05  also today there has been hitch on for several times.
12-06  at 06:40 again there has been hitch on for 3 times.
15-07  between 07:25 and 07:27 there has been hitch on for 3 times.

■ summery ■

 

 

 

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