The swift nest is located under the fifth roof tile from the left. Just above the rain gutter. The infrared camera is mounted one tile to the left and a little higher. You look down in a diagonal line.
The roof has a slope of about 40 degrees so, to imagine the real position turn the picture counter clockwise 40 degrees as seen on the black and white picture on this page. The ceiling is a roof tile. The floor is a wooden beam at where the rain gutter is mounted at. The red bowl, drawn on the b/w picture indicates the actual nest, made of material that swifts collect in the air. Behind the nest the entrance is located. The red arrow at the first picture indicates the flying-route to and from the entrance.
The third picture is a close-up of where the birds fly into the hole. From that entrance they have to crawl about 3 feet under the roof tiles to arrive at the nest. I found out that they do not crawl in a straight line but walk up one roof tile, go to the right and walk down again. 
1 comment:
Wow, this is a really great observation device, thank you VERY much
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