Hi there and a warm welcome to you from those of us on staff here at BirdForum
We're glad you found us and thanks for taking a moment to say hello. Please join in wherever you like
It does appear to be a Wren in the first pic and please be advised that we don't allow nest images in your future postings
Also please be aware that humans going near a nest can cause the parent to abandon the nest. Just some info for you KP!