I had a suspicion last night as I closed the garage door that there was a bird somewhere but there was no sign. This morning however sitting on the top of the car was a young blackbird. Within seconds of me opening the door the male was in with worms - I put out some seeds on the floor and they were gratefully accepted by him and he fed the chick. Stayed for around four hours before I shepherded them off the premises. Now in the bushes.