Due to the volume of requests, I cannot make higher resolution images available for free use. Researchers and Instructors please contact the photographer for uses not covered by Fair Use under U.S. copyright law. Reproduction online is NOT included in FairUse. There is a nominal fee for duplicate slides used for unpaid educational AV presentations. There is a fee for any use of an image associated with a service, product, promotion, or other vehicle employed to raise funds, make a profit, or promote same.
Fees vary depending on the type and extent of use.
This is a business and without fees I cannot continue taking photographs. Archival prints are designed to last many years with proper care. I intend to expand bibliographic listings on the more popular animals. Due to professional obligations to my clients, I must insist on maintaining control of how my images are used. I am glad to help bonafide researchers and images are certainly available by fee for editorial and advertising use.