Large Kauai Crake (Zapornia sp.)
This rail form is known only from the subfossil distal end of a left femur, that was recovered from the Makawehi Dunes on the island of Kaua’i.
This single part of a bone does not fall within the size range of any of the known rail species known from Kaua’i, but, of course, is to fragmentary to describe the species properly. [1]
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References:
[1] [1] Storrs L. Olson & Helen F. James: Descriptions of thirty-two new species of birds from the Hawaiian Islands: Part I. Non-Passeriformes. In: Ornithological Monographs 45. 1991
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edited: 18.05.2019