About this collection
Number of items: 104
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Subjects
Permissions for Use
This resource may not be downloaded and used without permission of the copyright holder except for educational fair use.
Identifications
Cope's gray treefrog
Hyla chrysoscelis
eastern gray treefrog
Hyla versicolor
Caption
This photo shows the two sister species of grey treefrogs. Hyla chrysoscelis is on the left and Hyla versicolor is on the right. The variation in color is common to both species, individuals of either species can range from green to grey. The difference in pupil size is an artifact of the lighting, both have similar pupil shape.
Contributors
James Harding 
(photographer, copyright holder, identification), Michigan State University
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It is a partnership of the University of Michigan School of Education, University of Michigan Museum of Zoology, and the Detroit Public Schools. This material is based upon work supported by the National Science Foundation under Grant DRL-0628151.
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