The Regent Honeyeaters depends mostly on the flowers of four eucalypt species and native mistletoe for its nectar supply. Specifically, they rely on the Mugga Ironbark, White Box and Yellow Box, and Blakeley's Red Gum. They also eat insects, manna gum, lerps (a small bug that lives on gum leaves) and hawk insects in flight in the high canopies of the woodland trees.
The Regent Honeyeater lives in eucalypt forests and woodlands dominated by Box Ironbark, in southeast Australia. They once ranged from Noosa in Queensland to the Mount Lofty Ranges in South Australia, but now they are only found from the Warrumbungle Ranges in New South Wales to central Victoria.
Nests are constructed from strips of eucalypt bark, dried grasses and other plant materials. The bark strips form a thick, walled cup with cobwebs binding it together and fine dried grasses lining the nest. Two or three eggs are generally laid, which are red-buff in colour and speckled with small purple-red and violet-grey markings. Regent Honeyeaters usually nest in isolated pairs. The female incubates the eggs with the male always close in nearby trees. He later helps the female with feeding the young.
Regent Honeyeaters are very clever nest builders! Their nests are constructed of strips of eucalypt bark, dried grasses and other plant materials. The bark strips form a thick, walled cup with cobwebs binding it together and fine dried grasses lining the nest. Their eggs are an unusual red-buff colour and are speckled with small purple-red and violet-grey markings. While the female incubates the eggs the loyal male always close in nearby trees. He even helps the female with the feeding of the young once they hatch!
The Regent Honeyeater is also highly mobile, capable of travelling large distances and undertaking a complex series of migratory movements, which are thought to be governed mainly by the flowering of a select number of Eucalyptus species, although a recent study in the Capertee Valley suggested that other resources such as insects may also influence the spatial movements of Regent Honeyeaters.