Mount Apo is home to many bird species, 111 of which are endemic to the area. It is also home to one of the world's largest eagles, the critically endangered Philippine eagle, the country's national bird. The Philippine Eagle Foundation is based near the city. Plant species include the orchid waling-waling, also known as the Queen of Philippine Flowers as well as one of the country's national flowers, which are also endemic to the area. Fruits such as mangosteen (known as the queen of fruits) and durian (known as the king of fruits), grow abundantly on Mount Apo.