CACCA conducts three Individual Nature competitions during the year in two divisions, slides and small prints. Photographs entered into Nature Competitions may depict observations from any branch of natural history, and must do so in a fashion that a well-informed person will be able to identify the subject matter and to certify to its honest presentation. Any view may be used, including micro and macro photographs.
Ineligible are photographs of artificially produced hybrid plants (e.g. garden flowers) or domesticated animals, mounted specimens, obviously set arrangements, derivations or any form of photographic manipulation that creates a false or misleading impression of the natural history subject
The story-telling value of the photograph will be considered along with its pictorial quality. Obviously recognizable man-made elements shall not be present except for scientific wildlife banding and in the rare instances where man-made elements enhance the story (e.g., where wildlife adopts a man-made location). Even in those instances, the man-made elements should be unobtrusive.
See the Rules (link) section of this site for details regarding further restrictions