When, from a distance, I first spotted this Great tit, I wondered what on earth it was doing.

It was plucking constantly and vigorously at something on the ground that it was holding down with its feet.

The bird was so focused on what it was doing that it wasn’t bothered about my approach and I was able to get a series of photos before the bird flew off with its prize.

Reviewing my photos, I realised that the object the tit was plucking at was part of a tennis ball, most probably an old dog’s ball that had fallen apart and been abandoned. At least now it was proving useful to the Great tit as nesting material, and I rather liked the idea that the bird and its nest would be colour-coordinated.