If you are having a wander through a bit of bushland or walking in one of the National Parks in Sydney, you will probably come across an Australian brush-turkey. They range from the far north of Queensland through to the Illawarra region, but have started to make inroads into the edges of suburbia. They are comfortable enough with people around parks and reserves that they will approach and see if there’s any food on offer.
It is only in the last 20-30 years that these birds have become a familiar site in the leafier suburbs of Sydney. They are not always desired garden tenants. The male brush-turkey builds a single large nest on the ground from leaves, mulch and earth. These nests can be up to 1.5 metres high and 4 metres across, so they are a significant size. The nest is built and maintained at a temperature of about 35ºC in order to encourage females to come along to breed, with eggs laid into the mound. It can take a couple of months to construct the mound, and the male and female birds test the temperature before eggs are deposited in layers. Several females will lay eggs in a single mound.
The male then monitors the temperature of the mound by ‘tasting’ a sample. The eggs are designed to hatch under the heat generated by the combustion of the organic material in the nest. When the chicks hatch, they need to dig themselves out of the mound and start taking care of themselves, as there are no parents around to provide any guidance. Within a few hours of hatching, the chicks are capable of flying.
The brush-turkey is the largest of Australia’s three megapodes, and it is impossible to miss the big (mega) feet (pod) on these birds. These are vital not only in the construction of mounds, but for finding food and are also used to aim dirt and sticks at any intruders, such as goannas.
There is something about the shape and mannerisms of the brush-turkey which always draws my attention. There is an article here suggesting five reasons to love brush turkeys for those that have one in their garden. There is a brief video here which shows a turkey building and testing the temperature of its nest. Another short clip is aptly named Australia’s Quirky Turkeys and features some lovely footage up close with these unusual birds.
Have you encountered an Australian brush-turkey lately?
[Photo: Australian brush-turkey and an Eastern water dragon at the Lane Cove National Park]