The Quetzal is found throughout the mountainous rainforests of Central America where they tend to prefer high mountain ranges at altitudes of between 4,000 and 10,000 feet. The Quetzal inhabits moist, tropical forests in areas that are cooler, contain dense vegetation and that are incredibly moist.
Mount Hkakabo Razi in northern Myanmar of 19,296 feet (5,881 metres) is the highest peak in SE Asia.
One argument is that geographic SE Asia comprises the land and islands between the Himalayas and Oceania and that therefore by this criteria Mount Kinabalu is the highest in SE Asia. Well possibly though it is notable that the Kinabalu Park authorities themselves no longer make any such claim.