My tiny sunflower, sown by birds

Beneath the garden bird feeder is a bucket of stones which I've picked out of the soil as IK tried to improve the texture of the earth in the raised beds. 
The bucket gathered water and now I realise that sunflower seeds fell oput of the bird feeder and germinated in the bucket.

When we returned from holiday in Spain, I found a two foot high sunflower plant, which I duly rescued and transplanted into a pot and moved into the cabin so it would keep hot. It is rather small, being only about four inches in diameter, but it's a very healthy looking sunflower, now brightening the cabin and which deserves to be blipped.