Whose nest?

Whose nest?

Observation - Whose nest? - UK and Ireland. Description: Old nest found on ground at base of tree. One side lined with feathers. Lots of moss. Could it have been a long-tailed tit's nest? I think their nests are ball-shaped, but perhaps this lost its original shape when it hit the ground. Two photos attached, s

Old nest found on ground at base of tree. One side lined with feathers. Lots of moss. Could it have been a long-tailed tit's nest? I think their nests are ball-shaped, but perhaps this lost its original shape when it hit the ground. Two photos attached, showing both sides of the nest; there's a 10p piece in each for scale.