Saturday, November 16, 2019

Common aquatic invertebrate taxa vary in susceptibility to capture by Black Stilt chicks

TitleCommon aquatic invertebrate taxa vary in susceptibility to capture by Black Stilt chicks
Publication TypeJournal Article
Year of Publication1999
AuthorsSanders, MD
JournalNotornis
Volume46
Issue2
Pagination311-318
Type of Articlepaper
KeywordsBlack Stilt, Himantopus novaezelandiae, prey capture, Upper Waitaki basin
Abstract

I tested the ability of captive Black Stilt chicks (Himantopus novaezelandiae) to capture and consume common aquatic invertebrates. Waterboatmen (Sigara sp.), segmented worms (Oligochaeta), and larvae of a damselfly (Xanthocnemis zealandica), midge (Chironomus zealandicus), mayfly (Deleatidium spp.), and caddisfly (Aoteapsyche colonica) were captured and consumed quickly and easily by chicks of all ages (2 - 30 days). They were also consumed in the greatest numbers. In contrast, two aquatic snails (Physa acuta and Lymnaea tomentosa) and larvae of two cased caddisflies (Triplectides sp. and Hudsonema amabilis) were captured and consumed with difficulty and in low numbers by young chicks (

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