By Kylie Stevens For Daily Mail Australia
Published: 11:59 GMT, 2 November 2020 | Updated: 11:59 GMT, 2 November 2020
They're regarded as one of Australia's most peskiest and hated birds.
But there's a lot more to the ibis or 'bin chickens' - as they're more commonly known know - than meets the eye, including their non-urban origins.
Legend has it that the first ibises in Australia originally came from Egypt and escaped from a Sydney zoo.
Ibises were rare in urban areas before the 1970s, when Sydney's Taronga Zoo began experimenting with free flight bird exhibits, which was reported on at the time by the ABC.
Sydney is home up to 7,000 ibises. Pictured is an ibis scavenging for food in Circular Quay
'They're among the most graceful and decorative of Australian birds,' the narrator for the television news segment from 1973 said.
The report states 14 ibises were encouraged to stay with daily meals of meat and crushed grain, and began breeding freely in the zoo grounds.
The ibis population expanded in large numbers in major cities along Australia's east coast from the late 1970s onwards.
‘As you can imagine these were birds that had already learned not to fear humans, because they were coming from an area where they were interacting with people, and they were scavenging