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1 September 2017 Undescribed Juvenile Plumages of the Laysan Rail Or Crake (Zapornia palmeri: Frohawk, 1892) and A Detailed Chronology of Its Extinction
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Abstract
The extinct Laysan Rail or Crake (Zapornia palmeri) was a small, flightless rail endemic to Laysan Island in the northwestern chain of the Hawaiian Archipelago. I detail the collections made, including eggs, nests, juveniles, and numerous adults prior to its extinction. The juvenile plumage was seemingly well documented, but my study of a series of juvenile specimens collected in 1891 and 1896 provides hitherto undescribed molt changes, from downy chick to definitive plumage. Morphometric data show that sexual size dimorphism is present with males being slightly more robust in bill, legs, and feet. I provide a detailed review of the literature showing the chronology of events that led to the extinction of the species and how this easily could have been avoided.
and Julian P. Hume "Undescribed Juvenile Plumages of the Laysan Rail Or Crake (Zapornia palmeri: Frohawk, 1892) and A Detailed Chronology of Its Extinction," The Wilson Journal of Ornithology 129(3), (1 September 2017). https://doi.org/10.1676/16-159.1
Received: 19 September 2016; Accepted: 1 January 2017; Published: 1 September 2017
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