I am not sure who is responsible, or why, but the other day I found the fragments of a bird's nest scattered below the site where it was neatly placed. The little coils of hay, feathers, string and wool dragged out and left shredded on the ground and blowing away in the wind. Then yesterday I discovered the same thing at an Ash tree in the lane. It has long low branches sporting scars and carbuncles from growth broken away by passing tractors and farm machinery, and these hollows have been occupied over successive years by nesting Blue-tits.
I noticed first a disturbance at the base of the trunk, wads of moss and sheep's wool. When I looked closer I found two felty little bowls, encased by moss. What exquisite roundels. I think they are Finch nests - perhaps Goldfinch. I looked for where they might have come from, and searched for broken eggs, or little hatchlings, but found none.
So I am puzzled, was it the high winds recently, or birds spring cleaning (the nests looked newish to me), or a predator?