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It looks somewhere close to a largish raptor to me (Buzzard, say), but given the area it was found, I could not begin to attempt a species.
My Flickr photos...
Alternatively, maybe an owl of some kind (and with the size of the feather, perhaps Eagle Owl?). It looks like a secondary and the very loose and fluffy-looking lower barbs look more owl-like than anything else to me, but pfff...!
Flickr pics: http://www.flickr.com/photos/72243477@N00/
Yes, I wondered that, too.
Lat/Lng: 48.11, 20.39
High mountain forest (approx 600m), Szilvasvarad, Bukk National Park, Hungary