Saturday, April 20, 2019

Feeding frequency, meal size and chick growth in Pycroft's petrel ( Pterodroma pycrofti ): preparing for chick translocations in Pterodroma species

TitleFeeding frequency, meal size and chick growth in Pycroft's petrel ( Pterodroma pycrofti ): preparing for chick translocations in Pterodroma species
Publication TypeJournal Article
Year of Publication2004
AuthorsGangloff, B, Wilson, K-J
JournalNotornis
Volume51
Issue1
Pagination26-32
Type of Articlepaper
Keywordschick growth, meal size, petrel, Pterodroma, Pterodroma pycrofti, Pycroft&rsquo, s petrel, translocation
Abstract

Many Pterodroma species are threatened, and translocations to predator-free islands are desirable for several species. As these birds are highly philopatric, only chicks that have not yet imprinted on their natal colony should be transferred but techniques to identify suitably aged Pterodroma nestlings are needed. We investigated feeding frequency, meal size and chick growth in Pycroft’s petrel (P. pycrofti) on Red Mercury Island, New Zealand to provide this information. Mean daily probability of being fed decreased from 0.47 60-23 days before fledging to 0.004 in the last seven days before fledging. Mean meal size was 34 g and morphometric measurements at fledging were similar to mean adult measurements. The best indicator of chick age was wing length. Transferable Pycroft’s petrel chicks should have wings measuring 149 - 184 mm and weigh 218 - 250 g.

Full Text
AttachmentSize
PDF icon Full Article222.78 KB