...
All the eBird APIs now have a formal Terms of Use statement that describes acceptable usage for the APIs. Read the statement for details, but one of the new aspects of the eBird APIs is that reasonable use use is free and open for noncommercial purposes; commercial uses require written authorization. Web sites and developers interested in exploring commercial usage should contain contact Mary Guthrie, Director of Marketing for the Cornell Lab of Ornithology, at msg21@cornell.edu
...