Blue-winged kookaburra highly aggressive in the first week of life, and the youngest chick is often killed by the older chicks during this period. Once fledged, juvenile birds need to be taught how to hunt by their parents for a further 6–10 weeks before they can properly fend for themselves. The red goshawk and rufous owl prey upon the blue-winged kookaburra. Adult birds are also slow flyers and vulnerable to being hit by cars on country roads. Nests are susceptible to raids by Olive Pythons, quolls and goannas. Blue-winged kookaburra The blue-winged kookaburra ("Dacelo leachii") is a large species of kingfisher native
Invasive species of Australian origin Invasive species of Australian origin There are a number of Australian species that have become invasive when introduced into outside Australia or outside Oceania. The Australian magpie was introduced into New Zealand and are considered to be a pest because of attacks on humans and a possible effect on the native bird population. The common brushtail possum was introduced to New Zealand to start a fur industry, and spread nationwide. With no natural controls they have severe impact on native plant species and thereby endanger native animals species too. Possums have also been observed eating the eggs of nesting birds