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The diet of nestling straw necked ibis, Threskiornis spinicollis, at Capel, Western Australia.

Hart, R.K., McRoberts, K.M. and Calver, M.C.ORCID: 0000-0001-9082-2902 (1998) The diet of nestling straw necked ibis, Threskiornis spinicollis, at Capel, Western Australia. The Western Australian Naturalist, 22 (2). pp. 129-134.

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The diet of nestling Straw—necked Ibis near Capel, Western Australia was determined by examining the gizzard contents of 18 moribund birds aged approximately four to seven weeks old which were collected at the nest. We identified a total of 1240 invertebrate prey recovered from 19 prey taxa1 The number of prey in each taxon, the volume of stomach contents they represented and the proportion of birds feeding on each taxon were recorded and used to calculate an Index of Relative Importance for each prey taxon. The top five ranking prey for nestlings 4—5 weeks old were lepidopteran larvae, two species of scafab beetles, a carabid beetle and an unknown terrestrial crustacean. Nestlings 5—6 weeks old ranked a scarab beetle highest, followed by a carabid beetle, unidentified pupae1 another scarab beetle and an unidentified beetle. Nestlings 6—7 weeks old ranked lepidopteran Larvae highest, followed by snails, two species of scarab beetle and a carabid beetle. Overall the nestling diet was similar to that reported for adult Straw-necked Ibis in other studies. There was no evidence that the nestlings had died because of poor nutrition.

Item Type: Journal Article
Murdoch Affiliation(s): School of Environmental Science
Publisher: The Western Australian Naturalists' Club
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