Bornean Stubtail (IMAGE) The University of Montana Caption The Bornean stubtail, seen here incubating its eggs, is an endemic species of the tropical island Borneo. It exhibits one of the lowest amounts of incubation care, incubating eggs for only about 20 percent of the time during daylight hours. Credit Thomas Martin Usage Restrictions Credit Thomas Martin License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.