HFCheung

Often one have to give up hope of a positive identification for birds like this.  I could only guess that this is indeed Crested Goshawk, based on wing shape.  Actually the number of fingers seem to be 5, but the first one is really small and can be too difficult to see in this photo.  I think the relative length of the fingers also points to Crested Goshawk.

HF Cheung