You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. 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.
Environmental Factors Influencing Nest-Site Preference in White-Browed Sparrow-Weavers (Plocepasser mahali)
J. W. H. Ferguson and W. R. Siegfried
Vol. 91, No. 1 (Feb., 1989), pp. 100-107
Published by: American Ornithological Society
Stable URL: http://www.jstor.org/stable/1368152
Page Count: 8
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.
Preview not available
Group-living White-browed Sparrow-Weavers (Plocepasser mahali) build their roost and breeding nests on one side of nest trees. The placement of nests correlates with the direction of the local prevailing wind. Birds gain a 35% increase in the useful life of a nest built on the leeward side of a nest tree, compared with a nest built on the windward side. Solar radiation, humidity, and thermal effects appear unimportant in influencing nest placement. Foliage density and other nearby cover does not affect nest placement. Hence, White-browed Sparrow-Weaver nest placement appears to be an adaptation for having large numbers of intact nests available for breeding and for roosting throughout the year.
The Condor © 1989 Cooper Ornithological Society