Catalog Home Page

First documented at-sea records of “intermediate morph” soft-plumaged petrel Pterodroma mollis and clarification of polymorphism in the species

Graff, J.K., Collins, A. and Cake, M.A. (2015) First documented at-sea records of “intermediate morph” soft-plumaged petrel Pterodroma mollis and clarification of polymorphism in the species. Marine Ornithology, 43 (2). pp. 161-164.

Free to read: http://www.marineornithology.org/PDF/43_2/43_2_161...
*No subscription required

Abstract

The Soft-plumaged Petrel is a gadfly petrel that occurs widely across the southern oceans and exhibits plumage polymorphism. Palebellied individuals make up the vast majority of the species, while dark individuals are relatively rare. Intermediate forms are rarer still and, according to some authors, known only from museum specimens. We describe a number of at-sea records of intermediate-plumaged individuals seen off southwest Western Australia, including a previously undocumented streaked variant. Our observations indicate that plumage polymorphism within the species covers a continuous spectrum of variation between typical pale and wholly dark individuals.

Publication Type: Journal Article
Murdoch Affiliation: School of Veterinary and Life Sciences
Publisher: Marine Ornithology
Copyright: © 2015, Marine Ornithology.
URI: http://researchrepository.murdoch.edu.au/id/eprint/29140
Item Control Page Item Control Page