Brown Goshawk or Collared Sparrowhawk

This bird kind of looks rather solid. Hard to tell cere colour, and tail may not be all intact. The brow is more goshawk-like. In any case, I would've thought a BG. I'll ask to see what Steve Debus thinks.

Collared Sparrowhawk

I find the Brown Goshawk and Collared Sparrowhawk difficult to tell apart - especially when there's nothing to compare to with regards to size - and it would be certainly helpful if people like Al would actually say a few things that they find useful for ID instead of just stating the name. Something I've seen Al do before and he failed to come back with any responses when I've asked. Hence why I will personally consult with an expert in the field rather than listen to someone's comment, which was unsubstantiated. Thanks Owen, I would always listen to your ID suggestions, as you are far more helpful! 

Steve Debus confirmed it's a Collared Sparrowhawk. These are the features he pointed out.

- The outer rectrices are longer than the inners, giving a notched tail tip (rectrices are also
rather broad to the tips)
- The spindly feet with very long middle toe; the boldly barred primaries; and the rather short head/neck and
small bill.
- The eye is staring, with a small brow-ridge
- The undertail coverts are a little whiter than I'd expect on a BG.
There's no sense of scale in the pic; I wouldn't be surprised to learn that it was a male (i.e. small).

Dave, this matter has been debated from time to time. Personally, I always find it useful when someone (like yourself) raises the question because it helps focus my attention on the features of both species. E.g., as supplied by Steve Debus via Windhover. It's always part of the great process of learning.