Anhinga melanogaster Directory References Discover 9 Mind-Altering Plants What’s the Difference Between Bison and Buffalo? 7 Deadliest Weapons in History What Is the Emoluments Clause? Cinco de Mayo 7 of the World’s Most Dangerous Lizards and Turtles 6 Animals That Eat Their Mates Contents Ask the Chatbot a Question Anhinga melanogaster bird Ask the Chatbot a Question Learn about this topic in these articles:darters In darter…Oceania constitute one species (A. melanogaster) or whether they should be separated into three (A. melanogaster, A. novaehollandiae, and A. rufa). Read More Britannica ChatbotChatbot answers are created from Britannica articles using AI. This is a beta feature. AI answers may contain errors. Please verify important information using Britannica articles. About Britannica AI.