American Bird Conservancy -information on threats to wildlife.
USFWS images -wildlife images in the public domain, two sites to start with are the USFWS Image Library and the NOAA Photo Galleries
NatureServe provides authoritative conservation information in a searchable database for more than 50,000 plants, animals, and ecological communities of the United States and Canada.
Nature.com – This new nature portal offers online searchable field guides to over 4,800 plant and animal species.
Patuxent Bird Identification InfoCenter – photographs, songs, videos, identification tips, maps, and life history information for North American birds. Looking for a great bird ID web site to share with callers or e-mailers? Try this one on the USGS site.
Nature Watch – – Do You Know Scat?
People who spend a lot of time observing wildlife know that mammals leave clues behind: piles of acorns, nipped-off twigs, leaf nests, and the like. And that there is one trace that all mammals leave: SCAT (or droppings, or any number of less-polite terms). Take our Scat Quiz to find out!
SREL Herpetology – this wonderful herpetology identification web page from the Savannah River Ecology Lab and the University of Georgia. Lots of great photos and descriptions!
The UK’s Natural History Museum—Department of Entomology HOSTS is a database of the hostplants of the world’s butterfly and moth (Lepidoptera) caterpillars.
Antbase is a website aimed at providing the best possible access to the wealth of information on ants.
The Hill Country Outdoor Guide allows you to search for over 1000 outdoor recreation sites and lodgings in Central Texas.
Creative Critter Solutions provides suggestions to humanely remove unwanted wildlife from in and around your home.