Are those point and shoot cameras that look like DSLR any good? From nikon?

Are those point and shoot cameras that look like DSLR any good? From nikon? - 1

The new Nikon Coopix P900 is becoming a favorite for birders and aircraft spotters.

Well, it seems to be out front in the competition to put longer zoom ranges on cameras with little bitty 1/2.3" sensors. That is something to be said for such small sensors--it makes the lens design easier than it is for covering larger sensors.
Of course cramming 16 MP into the small sensor, the P900 will have the same noise and noise reduction artifact as a little pink purse camera.

Bridge cameras? It depends. The most popular come from Fujifilm while the one from Pentax almost is as big as a real dSLR. Nikon bridge? Ugh!

They are called bridge cameras. Nikon and Canon make very good ones but king of that market sector is Fuji.

They are called bridge cameras.

Doesn't matter who makes them, the problem is that most have tiny sensors, same as a point and shoot.

Personally, I wouldn't want one even if someone gave me it for free. I certainly wouldn't buy one. Been there, done that.

Well, they certainly get high rankings from their users. However, those of use who use real DSLRs think that they're all garbage.
The problem is that if the user doesn't know the difference between a good/bad image or what they're missing by going with a real DSLR, then the bridge cameras with their super-tiny 1/2.3" sensor and super-small pixels is going to be fine. For the same reason people often think that smartphones take good pictures.

The problem with camera like bridge cameras is that the sensor is extremely small. In fact, it HAS TO BE. As the sensor size decreases, so does the size of the lens required for any given angle of view. That's why on a bridge camera you will use focal lengths from 5-140mm, while on a true DSLR, you'd would need a lens that goes from 28-785mm. That lens on a true DSLR would be huge about 15 pounds. This is important to know because as the you decrease the focal length, you will inherently get more area in focus (larger depth of field). This therefore makes it literally impossible for cameras with sensors smaller than Micro 4/3 format to isolate subjects from backgrounds by blurring the background.
Each format has a crop factor that allows one to calculate what the effective focal length is on a full-frame 35mm format camera. In the case of bridge cameras, which have the smallest sensors made, the crop factor is 5.6x. A 5mm lens is the same as a 28mm on a full-frame camera. The advantage is smaller/cheaper lenses. The disadvantage is a huge depth of field all of the time. Just like having to multiply the focal length of the lens, one has to multiple the aperture to also get an equivalent in 35mm format. So a 5.6 aperture on a bridge camera is the same as shooting a 35mm format at f/32, which is why your DOF is always HUGE.

Because the depth of of field is always huge, these cameras don't need smaller f/stops like cameras with bigger sensors do. Therefore, the manufactures don't put them in the camera. This is a big problem because you now have a camera with only two apertures to choose from. This makes it extremely difficult or impossible to control your exposure. It prohibits you from choosing longer exposures to intentionally blurring motion like that of water or clouds.
So, if you're someone who is just a point-and-shooter and takes photos infrequently and of just friends and family, then it's fine. Otherwise, it's one of the worst types of cameras with a sensor from smartphones, and the same picture quality too.

These are more or less advances point and shoot cameras. Cost wise the Fujifilm Finepix line wil be your best bet.
Make sure it has a viewfinder that you can look through and a battery you can recharge. No AA's!
The Nikon P coolpix series are decent. You can get great deals on a refurbished model.