I see what you were trying to do, and done well I would prefer the PP'd version, as the bird would stand out more.

However, it's been fairly badly done, and I can obviously see the cutout, and therefore it's quite jarring and looks obviously fake. The outline of the bird has a white glow where the bird selection has been feathered and it stands out straight away.

So I'd say - plus one star for the idea (it's one I use quite a bit) but minus one star for the execution, and so in this case the original, the more natural shot, is the only one I could choose.

I know it's not the crit forum, but you did ask which we preferred, and I gave you the reasons why...

(I'd probably also darken those trees down, as they clash quite a bit with the bird in terms of brightness...)