During the National Wildlife Week (April 21th - 29th), if you can, please participate in the First Annual Blogger Bioblitz:
Pick a neat little area that you are relatively familiar with and is small enough that you or the group can handle - a small thicket, a pond, a section of stream, or even your backyard - and bring along some taxonomic keys or an Audubon guide, or if you're lucky enough, an expert in local flora and fauna. Set a time limit. Try to identify the different species of organisms that you find as well as the number of each species that you find. Take pictures if you have a digital camera, compile your numbers, make observations, set up your post however you wish as long as you include your numbers in a digestible fashion (I'll have more details on that later) - then submit it to me and I'll include it on the list. We will also be tallying total numbers of each species found, and then a grand total. There has also been talk of coding an interactive Google Map with distribution information, geotagging regions with a blogger's submitted information.
Bruno has all the necessary additional information on how to participate (and why).