CLUTCHSIZE AND FLEDGLING SUCCESS OF THE AUSTRALIAN WHITE IBIS Threskiornis molucca IN AN URBAN ENVIRONMENT
| Posted: |
12/04/2021 |
| Author(s): |
Daniel T. Corben, Ursula Munro |
The Australian White lbis Threskiornis molucca is very successful in adapting to and surviving in urban environments.
Overabundant and/or large permanent populations have established in many urban areas of coastal eastern Australia. In urban
areas, the Australian White lbis is currently regarded as a major pest and many agencies aim to reduce its numbers, however,
the lack of knowledge on this species has made management difficult. In this study clutch size and fledgling success of
Australian White lbis breeding in Centennial Park, a large urban park in Sydney, were measured. Mean clutch size was 2.70,
with a modal clutch size of three. Mean number of fledglings per successful (nestlings hatched) nest was 2.64. While clutch
sizes were similar to those reported for ibis in natural and non-urban environments fledgling success was considerably higher in
Centennial Park. This is most likely due to high food availability in urban areas. Management of artificial food sources (e.g.
landfills) might be necessary for successfully managing ibis in urban environments.
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