There are, it seems to me, two classic bird photograph backgrounds. One shows the habitat of the bird in the image while the other deeply blurs the background to focus the viewer's attention solely on the bird. Both approaches have their advantages but the second is the easiest to achieve by far. I photographed this pied wagtail as it searched the outdoor cafe area, where we were sitting, for crumbs. In the shot it is perched at the corner of a wooden table and beyond is paving.
photo © T. Boughen Camera: Lumix FZ1000 2