What Lens do you suggest for my nikon d7000?

So i'm going to buy a nikon d7000.i'm still a beginner in this area, so i wanna know what lens should i get if i love taking portraits and i love taking pictures of animal motion, birds flying, water splashing things like that. I want a lens that works for these kinds of pictures.

You are going to need various lenses for those types of photography. For portraits, a 50mm lens would excel
for birds flying, you need a pretty long lens, the 70-300mm VR perhaps, depending on how high the birds fly. If they are high in the sky, then you need to get a 400mm or 600mm prime.

in all honestly, stick with the kit lens until you get enough experience to the point where you don't need to ask what lens you should get. By then, you should know what you really want.

Http://keerok-photography.blogspot.com/2011/05/lenses-so-many-of-them-there-is-no-best.html

For portraits and water splashing, 35mm to 55mm would be fine. For animal motion, birds flying and things like that, you'll need a longer lens at least 200mm. If you want them all in one lens, get an 18-200mm or the 28-300mm lens. If you want technically better picture quality, get a 35mm, a 50mm, a 200mm and a 500mm, all in the lowest f/number you can afford.

Start with the kit lens and get a feel for what it does and doesn't do. Learn how to use your camera with it. If anything buy the Nikon 50mm f/1.8 with it. It will give you a taste of a good quality lens compared to the kit lens. It will give you a taste of using a prime lens. It will give you the ability to learn your camera on a lens that won't change settings as you zoom.
Using those two lenses will give you a good feel for what you want and need. What you need will be different than what I need which varies to what others need. So buying a lens or lenses now that you *think* you may want and need? Is kind of a shot in the dark as to what you really will want and need down the line.
You have a HUGE learning curve ahead of you. Get through that and you will know much better what you want and need.

Even at 300mm you'll be short for birds, unless you're in a 20 feet's radius, I tried mine this summer and I was bum, the bird was on an electric cable about 40 feet's and he end up small on the photo.

If you were really into portrait I would have suggest the 85mm1.8D very good lens not too pricey.

For animal you would be better off with something like a Sigma 120-400 but the lens isn't cheap.

Nikon 70-300mm f/4.5-5.6G ED IF AF-S VR Nikkor Zoom Lens is wonderfully sharp. The auto focus can hunt slightly in dimmer conditions but you would probably expect this with a 4.5 lense. Don't let this stop you at all.