3/119 Hayward Avenue, Torrensville, South Australia, 5031
t: 08 7127 5607 f: 08 8352 1222 e: info@ebsecology.com.au

Based on Knowledge, Experience and Customer Service

White Ibis Management

White Ibis (Threskiornis molucca) were originally observed at Roy Amer Reserve, situated in Oakden (South Australia) prior to 1999. Monitoring surveys, spanning three breeding seasons, were conducted at the reserve to monitor the number of White Ibis utilising the wetland. During this time, their numbers fluctuated with a peak population of 325 birds reached in 2009. The influx of White Ibis created issues around smell and noise for park users and nearby residents. Increased numbers of Ibis also had a deleterious influence on water quality and resulted in competition for breeding space with other species, such as the Little Pied Cormorant (Microcarbo melanoleucos) and Royal Spoonbill (Platalea regia).

In response, EBS Ecology developed an Australian White Ibis Management Plan for the City of Port Adelaide Enfield. One of the aims was to reduce the number of shrubs that White Ibis nested in, forcing them to return to their natural breeding grounds, such as the Barker Inlet. In March 2012, EBS Restoration removed shrubs and trimmed trees that represented key nesting habitat.

These restoration works have been successful in reducing the number of White Ibis that breed at Roy Amer Reserve, but as per the management plan, have not been completely removed from the area. The visual amenity of the island has increased with the planting of new ground cover and importantly, both the Little Pied Cormorant and Royal Spoonbill have been recorded nesting on the island again!

 

The survey site

 

The Island Before EBS Restoration Works

 

The Island After EBS Restoration Works

 

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