Birds
White-Winged Chough
Corcorax melanorhamphos · also called white-winged choughs
A white-winged chough family works the ground together, a dozen black birds with startling red eyes turning over leaf litter as a unit. That number matters more than it might seem: fall below a certain group size, and raising chicks through the species’ unusually long fledgling period becomes genuinely difficult, difficult enough that some groups resort to kidnapping a neighbour’s fledgling rather than risk it.
Overview
The white-winged chough, Corcorax melanorhamphos, is a cooperatively breeding ground-forager native to open woodland and grassland of southeastern Australia. Family groups of up to a dozen or more birds work together to raise young through an unusually demanding, extended fledgling period.
When helpers are worth stealing
A group short on non-breeding helpers faces real trouble raising its brood, and that pressure has pushed some white-winged chough groups to a striking extreme: abducting a fledgling from a neighbouring group’s nest and absorbing it as their own future helper.
Status
Least Concern — widespread and stable across suitable woodland and grassland habitat throughout southeastern Australia.
White-Winged Chough: common questions
Why do white-winged choughs kidnap fledglings from other groups?
White-winged chough breeding success depends heavily on having enough non-breeding helper birds within a group to successfully raise chicks through an unusually long fledgling dependency period, so groups that fall below a critical minimum size have been documented kidnapping fledglings from a neighbouring group's nest specifically to boost their own available helper numbers.
How many birds are in a typical white-winged chough group?
A white-winged chough family group typically contains anywhere from around half a dozen up to a dozen or more birds, usually made up of a breeding pair along with non-breeding helpers, most often their own offspring from previous breeding seasons, all cooperating to raise the group's current brood.
What role do helper birds play in a white-winged chough group?
Non-breeding helper birds within a white-winged chough group assist the breeding pair by feeding chicks, defending the group's shared territory, and generally supporting the demanding, extended period young choughs remain dependent after fledging, a role considered essential given how difficult it is for a breeding pair alone to raise young successfully.
Where does the white-winged chough live?
The white-winged chough is native to open woodland, forest edge, and grassland habitat across southeastern Australia, where it forages on the ground in cooperative family groups that defend a shared territory against neighbouring groups.