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The Australian White Ibis Threskiornis molucca is an unexpected addition to the small number of native birds that have recently moved into urban and suburban areas. The arrival of the species in the Central Business District of Brisbane in South East Queensland has been accompanied by an increase in associated human-wildlife conflicts. In order to provide essential ecological information of the species in this region, a series of studies have been undertaken. The present study attempts to determine the distribution of the Australian White Ibis with respect to six major habitat categories positioned along an ‘urban gradient’ from the urban centre, through suburban, exurban/rural and industrial areas, to wildland and coastal areas. Foraging ibis were surveyed during vehicle-based transects covering all parts of a 545 km2 study area. All ibis detected were assigned to one of 218 1.25 km2 cells, which covered the entire study area. Ibis were detected throughout the area, though they occurred in highest numbers within urban and coastal areas. Ibis were found in 100% of urban cells, 20-55% of suburban, rural/exurban and industrial cells and were absent from all wildland cells. A large number and diversity of foraging substrates were used by White Ibis, with suburban areas providing the largest number.

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