This is Nikon's answer to Canons 7D MkII but it is around £500 more so it looses half a point for that. Performance wise it's spec is very similar except for it's massive 153 point autofocusing. Read on for more info.
Shoots up to 10 images per second, which is more than enough for most wildlife photography and is especially good for bird photography.
Fast processor (EXPEED 5) means it processes images faster than the Nikon D7200 but it's needs this extra power due to the added technology.
153-point autofocusing, which is a stunning amount of focus points. I am not sure however that you will ever use them all when photographing animals. Even when photographing small birds in flight most photographers will only use the central cluster or as few as 9. I don't think I can ever recall using all of the focus points on any camera to capture wildlife.
20.9-megapixel images which is pretty standard and certainly good enough for wildlife photography and the cropping you will no doubt have to do.
180,000 pixel metering system, which is reported to be very good and very responsive. It's slightly more than the Canon 7D MkII but the difference is not noticeable.
Jargon alert (See my tech page for an explanation of ISO): This camera like other Nikons is known to handle dull conditions well and it has a whopping ISO capability of 51200 similar to Canon's top of the range EOS-1D X Mark II. It's unlikely that a wildlife photographer would ever need this level of ISO and most photographers rarely work above 800 as the quality rapidly deteriorates above that.
Its weather sealed against moisture.
This is a nice camera, with high specifications. I cannot help thinking Nikon went 'over board' on the focus points and the ISO in order to try and out do Canons 7D MkII. The fact is however, wildlife photographers will not use either to it's full ability and you are paying more for the camera. If you do other types of photography it may be useful, however you would be better served with a full-frame camera (larger sensor) in that case.