Tuesday, November 25, 2014

Breeding problem for Ground Parrots

Long-billed Corella      Photo: Wikipedia

David McFarland in his 1989 report (see previous posting) put together a table (below) which compares egg failure in several species of Australian parrot. All the Ground Parrot data refers to Eastern Ground Parrots. There is almost no data available on Western Ground Parrot egg failure.

Note that the egg failure excludes predation and desertion. Although the number of Ground Parrot eggs is separated into three studies, each of the failure percentages is higher than any of the other species listed.

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