The pileated woodpeckers are very large birds -- nearly the size of a crow -- but very shy. I tried approaching closer, but the pileated just slipped around the other side of the trunk so I couldn't see him.
IMHO, what makes the HX400V so special is the combo of long reach -- 1200mm e without digital zoom -- and a really terrific manual focus capability -- an actual ring on the lens barrel that allows me to focus on the bird and not the branches that might fool the autofocus. My FZ200 was better in low light, but the manual focus was much more difficult to fine tune.
Also, the HX400V produces very punchy images -- those above are SOOC.