BioOne is a database of 200 high quality, subscribed and open-access titles focused in the biological, ecological, and environmental sciences. As a nonprofit organization, BioOne exists for the benefit of the scientific community.
BIOSIS, accessed through Web of Science, is a citation index in the life sciences covering molecular and cell biology, pharmacology, endocrinology, genetics, neurosciences, infectious diseases, ecology and organismal biology.
BNA Online provides comprehensive life histories for each of the 716+ species of birds breeding in the USA and Canada. The site, maintained by Cornell University, has image and video galleries showing plumages, behaviors, habitat, nests and eggs and sound recordings of bird calls.
The first 45 chapters of the German "Botany Online" "have been translated into English covering all plant anatomy, classic genetics, organic chemistry and plant biochemistry, intercellular communication, interactions between plants, fungi, bacteria, and viruses, evolution, and a part of ecology."