House sparrow fledgling - is it ok?

Hi everyone, I think we have a juvenile house sparrow in our garden. It is very fluffy and has some orange at the side of its beak. The orange is what makes me believe it's juvenile. What do you think? Have attached some pics. My question is I see it napping throughout the day for say 5 mins under a hedge, then it will go and forage for food. Is this normal behaviour? Is it sick or do the baby birds just do this? 

It seems to manage up onto the feeder ok and flies away if I get close altho it's definitely more trusting than the adults as its slower to fly away.