Wednesday, April 21, 2021

Displaced by riverbed flooding; quantifying numbers and distribution of refugee wrybill (Anarhynchus frontalis) on Canterbury coastal wetlands in October–November 2013

TitleDisplaced by riverbed flooding; quantifying numbers and distribution of refugee wrybill (Anarhynchus frontalis) on Canterbury coastal wetlands in October–November 2013
Publication TypeJournal Article
Year of Publication2020
AuthorsCrossland, AC, Crutchley, P
JournalNotornis
Volume67
Issue4
Pagination765-771
Type of ArticleFull article
KeywordsAnarhynchus frontalis, coastal Canterbury wetlands, river floods, Wrybill
Abstract

 

We undertook a survey of coastal wetlands in Canterbury (NZ) during a widespread river flooding event in Spring 2013 to quantify numbers and distribution of wrybill (Anarhynchus frontalis). We found 740 birds, of which 685 (92.6%) were at Lake Ellesmere/Te Waihora. We calculate that 15.8% of the estimated effective wrybill breeding population were displaced from breeding rivers by floods at this time. Our findings support the evaluation by Dowding & Moore (2006) that the network of wetlands along the Canterbury coast appears to be of critical importance to wrybill as breeding season flood refugia.

 

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