Sharon Ryall

Sharon Ryall

Sharon Ryall
Manager, Centre for Ecosystem Science
Room 508, School of Biological, Earth and Environmental Sciences
UNSW Australia
Sydney NSW 2052
(61) 2 9385 2802

Publications

Author Date Title Link PDF
Callaghan et al. 2017 A probable Australian White Ibis Threskiornis moluccus × Straw-necked Ibis T. spinicollis hybrid

Abstract. We observed a probable juvenile Australian White Ibis Threskiornis moluccus × Straw-necked Ibis T. spinicollis hybrid on the Lachlan River catchment, New South Wales, in November 2016. Photographs, combined with observations, demonstrate phenotypic characteristics of both these ibis species. The bird had a pattern on the wing similar to the Australian White Ibis but coloration on the body similar to the Straw-necked Ibis. To our knowledge, this is only the second report of a probable hybrid between these two species in the wild, and the first report documented with photographs.

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Brandis et al 2014 Assessing the use of camera traps to measure reproductive success in Straw-necked Ibis breeding colonies

Summary. Nest monitoring may influence reproductive success and rates of predation. This study compared data from two methods of monitoring nests — repeated visits to nests by investigators and collection of data by camera traps — in Straw-necked Ibis Threskiornis spinicollis breeding colonies in the Murrumbidgee catchment in New South Wales. There was no significant difference in reproductive success between nests monitored by these two methods. These data show that (1) nest monitoring using camera traps is a valid survey method that reduces the need for investigators to engage in intensive and costly monitoring in the field, and (2) there was no detectable interference from repeated visits to nests by investigators on the reproductive success of ibis.

Brandis et al. 2012 Pittwater waterbird habitat survey and mapping - report View PDF
Brandis et al. 2011 Lowbidgee 2010/2011 Colonial Waterbird Breeding View PDF
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