I haven’t really had time to today, but yes I probably could.I would say not a wren
Hard to see the size really - blackbird ?
Can you not just stand back and watch for the adults ?
Found a couple of Wren nests over the years - beautifully made and as you say, a perfect little ball of twigs/leaves/down/moss with a small entrance hole. A real work of art!Robin, wrens put a roof on the nest and enter via a hole.
Robins make an open cup.
Stay away from it, please.
At this phase the chicks will jump out and can go anywhere if you scare them.
Let them fledge in their own time.View attachment 362841
This one is in my garden.
She is sitting hard.