Very impressive Bridge Camera for the money. The only real downsides are that it lacks RAW capability and the contrast detection based AF system. Otherwise, it's impressive and will get shots that wouldn't be possible otherwise.
I have an 800mm lens like the one in my avatar. Lugging that bad boy to anything isn't fun and once strapped to a capable body and fastened to a solid tripod, you're carrying nearly 17lbs and nearly $15k of gear with you.
This little Nikon can bring home some very usable images in the 2000-4000mm range. I've not picked one up yet, but for kicks might buy it. If anything it's fun to have
http://www.imaging-resource.com/PRODS/nikon-p900/nikon-p900A.HTM
IR always delivers solid information. Check out the samples. Keep in mind the 16mp size isn't something you're going to view at 100% unless you're printing poster size prints at 300ppi.
Here's are two samples of IR's images. The both were shot at an equiv. of 2000mm and is shown here in an equiv. to a what would be visible in terms of noise and detail on a 5x7 shot. Even an 8x10 wouldn't be much different if at all. Ask me how I know. I've taken even my 5DMKIII and cropped images crazy close even I would be hard pressed to pull the below off. Hand-held would be near impossible. However, a $600 consumer camera and a tiny 1/2.3" sensor did it.
http://i270.photobucket.com/albums/jj84/crms3er/lisc0gxf_zpsn6kbb5ap.jpg
http://i270.photobucket.com/albums/jj84/crms3er/Untitled-1_zpsu7jcxmlr.jpg