Just found a baby blue tit in the garden beside my log pile. I knew there was a nest in the log pile but not exactly where.
So I put the baby on top of the log pile and watched, amazingly both parents found it and fed it.
I watched for a while and eventually they gave away the nest entrance, so I picked up the baby and pocked it in the entrance - it was very reluctant and was trying to scratch and bite me - but once it realised it was home it scooted back to the nest - AHHHH.