"This image is a work of a U.S. Fish and Wildlife Service employee, taken or made during the course of the person's official duties. As a work of the U.S. federal government, the image is in the public domain. For more information, see the Fish and Wildlife Service copyright policy", ou seja, está em domínio público.
Note: This only applies to works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision.