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Nest Site Selection by the Exotic Chestnut Mannikin (Lonchura malacca) in Puerto Rico

Joanna Burger and Michael Gochfeld
Biotropica
Vol. 21, No. 4 (Dec., 1989), pp. 364-368
DOI: 10.2307/2388288
Stable URL: http://www.jstor.org/stable/2388288
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Nest Site Selection by the Exotic Chestnut Mannikin (Lonchura malacca) in Puerto Rico
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Abstract

Chestnut mannikin (Lonchura malacca), an Estrildine finch recently introduced in Puerto Rico, is a widespread Southeast Asian species. In its native habitat it frequently nests in vegetation over water, but in Puerto Rico it usually nests in dense sugar cane. In a marsh ecosystem in Humacao, mannikins nest in clumps of Cyperus spp. growing on top of stumps in a lagoon (depth = 50 cm). Their nests are in sedge clumps that are in shallower water and on higher stumps, and that are taller, wider and denser than clumps without mannikin nests. Nests were usually placed on the south side of the clump, with the entrance facing open water. The predator protection offered by nesting over water may account for nests being placed in relatively open sites.

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