The domain suffix of a website (the postscript at the end of a web address) can be a good indicator of the the website's authority and accuracy.
"A web site for information about mammals and the American Society of Mammalogists."
"The nation’s leading science-based, data-driven, service organization that protects the public’s health."
A website that works with "open access biodiversity knowledge providers around the world, including museums and libraries, universities and research centers, individual scientists, graduate students and citizen science communities, and a suite of international open data hubs."
"Searches over 60 databases and over 2,200 scientific websites to provide users with access to more than 200 million pages of authoritative federal science information including research and development results."
"A database produced by the National Agricultural Library (NAL), contains over 6 million records encompassing all aspects of agriculture and allied discipline."
"Provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories."
This project "supports scientific research and facilities to achieve a predictive understanding of complex biological, earth, and environmental systems with the aim of advancing the nation’s energy and infrastructure security."
This website "provides national leadership in the recovery and conservation of our nation's imperiled plant and animal species, working with experts in the scientific community to identify species on the verge of extinction and to build the road to recovery to bring them back."