Ball of fluff ....!

This little baby bird has been 'hanging out' all day - bit of hopping around, eating seed and sleeping. We've been keeping an eye on it as it seemed a bit vulnerable, especially when nasty Mr Blackbird had a peck at it. No sign of Mum or Dad so not sure what it is - maybe a siskin or chaffinch? Was pleased when it flew into the hedge as the sun set.