Baby Grey Wagtail

It has to be it's first day out on it's own! It was so shy, fluffy and unsure of itself. Didn't know there were Grey Wagtail's at this site just behind my home. When it wobbled off, it's yellow underparts were just visible. They are summer migrants and have some yellow under the tail, despite their name and not enough to be Yellow Wagtails which are all yellow!