I am always keeping an eye out for birds that start nesting within reach of a wired camera! It is essential to carefully assess the situation and I always put the welfare of the nesting bird first. If I do not feel I can position a cam without any disruption, then I will not attempt to do so. If the birds are just starting the nesting process, then they are away from the site for periods of time. I set up a cam away from the site, having calclated the focal distance and the positioning. I am able to quickly postion the small nest box-type cam when the bird is not there, and, if sensibly positioned, the bird will return and show no signs of noticing the camera.