There are really many different ecology sites on the web. Here are some I would definitely recommend for you to visit.
First one is Bird Ecology Study Group. This is excellent site with lot of quality info about birds. If you want to know as much as possible about birds then this is definitely the right site for you.
Globalisation and the Environment is the second site on my list. This site will help you learn connection between the globalization and the environment. And of course Rob always has something interesting to share with the world.
Climate of Our Future is another interesting site. Nobody knows what our climate future will be like but this site will try to tell you the best possible answer.
Thoughts on Global Warming is site that will give you useful info about global warming, alternative energy, etc...
Ruscombe Green is here to share his "green thoughts" with you.
Urban Forest will open your eyes so you can immerse in nature.
The Conscious Earth has always some interesting environmental news.
AlternativeEnergy.com will give you more insight about alternative energy.
Subsistence Pattern Growing and gathering our own food. How hard can that be? Well take a look.
Ecographica learn about evolution, ecology & ethology.
Best Green Blogs best green blogs collection on web.
Our Energy discusses renewable and non-renewable energy sources.
The Recycle Times Raising a Toast to a Clean Green Planet.
Planet Green excellent source for Sustainable Living and Energy Conservation.