Thumbnail photos taken by Steffen Reichle may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law. If you want to use photos larger than the thumbnail size, the following usage applies: Permission is granted to use photos larger than thumbnail size to students and teachers at K-12 and college as long as the image is clearly credited with © Steffen Reichle. Please request permission before using or storing text from photos taken by Steffen Reichle, such as scientific and common names, locations, dates, and notes. Contact Steffen Reichle (sreichle[AT]tnc.org) for more information.
For more information about usage, see Using the Photos in CalPhotos.