Aberrant plumage in the Yellow-billed Pintail Anas georgica

Robert E. Wilson, Thomas H. Valqui, Kevin G. McCracken

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Plumage aberrations are common, particularly in waterfowl. There have been numerous proposed causes including the retention of ancestral plumage characters that contain phylogenetic information. A partial white neck ring was observed in Yellow-billed Pintail Anas georgica spinicauda near Cusco, Peru. Non-typical white neck rings have been reported in other waterfowl species. Although the exact cause is unclear, its reoccurrence in other species and the consistent placement suggest that this unusual plumage could be of evolutional significance.

Original languageEnglish (US)
Pages (from-to)192-196
Number of pages5
StatePublished - Dec 1 2006
Externally publishedYes


  • Anas georgica
  • Peru
  • Plumage aberration
  • Yellow-billed Pintail

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Nature and Landscape Conservation


Dive into the research topics of 'Aberrant plumage in the Yellow-billed Pintail Anas georgica'. Together they form a unique fingerprint.

Cite this