Look for binoculars endorsed by the Audubon Society. I am not sure what models are currently endorsed but my old Bausch and Lomb's give me a crisp and clear image.

Try looking at Orion - www.telescope.com

They have a nice Product Selection Wizard to narrow down your choices and give you some decent explanations of what all the specifications mean. I bought a pair from them and have been very happy with my choice. I just looked on their Website and saw they now have a pair with a camera built in. Sounds neat!

Here is a link that might be useful: Orion Telescopes and Binoculars

I bought a pair of Baush and Lomb "Elite" after going on a birding trip to the Everglades with Mass Audubon. The best way to select binoculars is to try them out. There were many different kinds of binoculars in the group and I asked if I could look through them. The Elite model was just perfect for me. It was powerful but lightweight and just felt right. It is best if you can hold and look through a pair before you buy.

The Mass Audubon store at Drumlin Farm in Lincoln usually has a good selection. You may decide to buy online but if you can, try them out at a store first. If you live in another state I'm sure a birding store or Audubon store near you would have them too.

If you want a really close-up look at the hummingbirds, consider a window feeder. I use the feeder show in the link below. One of these feeders is placed on the window at the kitchen sink so I have the birds right there when I'm working.

However, you should also consider a pair of binoculars just for general bird watching . The Bird Watching site on Nature.Net has a forum devoted to optics; you might want to look over there for suggestions. I have a pair of Zeiss that I really like. However, I'd like to ID butterflies with them, but it's difficult to focus in on anything less than 15' away.

Here is a link that might be useful: Window hummer feeder

Eagle Optics is a brick and mortor store in Wisconsin that also is a huge on line store with a huge selection and if you call really good advice. If you want to spend a fair amount I really love my Swift Audubon ED's. At the medium to higher end costing bin's you get a newer type of glass which makes a big difference - audubon calls theirs ED (extra dispersion?)
Mary