Anyone identify this bird?

I've noticed that most of today, this bird keeps coming back to my garden. 

Not sure if its due to its nature of behaviour, but it has a tendency to keep looking up at the large trees. Is that a sign of nesting?

Also, it goes away for a while and then returns.

The picture is a bit blurry, but I didn't want to scare the little thing away!


CuriousBirdie x