Here are a few sites that can help you get started: www.nwf.org/backyard/ www.audubon.org/bird/at_home/i???www.birds.cornell.edu/AllAbout???www.thebutterflysite.com/garde???www.nrcs.usda.gov/Feature/back???Species TrackerFor my own benefit, and hopefully for visitors, here is a list here of which positively ID'ed bird, butterfly, and dragonfly species I have posted photos of in my gallery.