Violet-green Swallow nestbox camera

She must have been inside a few days ago, because there was a large feather in the box that is not visible now.  But today I happened to turn the camera on while she was doing a thorough inspection, and it was quite interesting to watch the process.  In the last photo below she was flat on her abdomen ruffling feathers and scratching around with her feet as if shaping the nest that is to come.