...needless to say, I have now installed a second camera in a second nesting box (the nesting box I removed on the last weekend in February)...
The set up is somewhat different this time: a different camera (colour this time), and instead of making a hole from the top through the roof of the nesting box, I made use of the big chunk of material under the roof by making a hole and placing the camera in it, thus reducing leakage problems.
Here are some technical details of the camera:
Description: 8,47 mm (1/3") CMOS Farb-Kamera mit 6 mm Lens
Voltage: 9 V/DC
Resolution: 250 920 Pixel
Current: 150 mA
Resolution (Lines): 280
Optical Resolution: 510 x 492 Pixel
Light Sensitivity: 3 lx
Aperture Settings: Yes
Integrated Optical Zoom: No
Integrated Microphone: Yes
Dimensions: (L x W x H) 55 x 38 x 25 mm