DSpace Repository

Geographic variation in the house sparrow (Passer domesticus) in New Zealand

Show simple item record

dc.contributor.author Neill, Margaret Melrose
dc.date.accessioned 2011-10-20T20:15:48Z
dc.date.accessioned 2022-10-31T20:38:40Z
dc.date.available 2011-10-20T20:15:48Z
dc.date.available 2022-10-31T20:38:40Z
dc.date.copyright 1972
dc.date.issued 1972
dc.identifier.uri https://ir.wgtn.ac.nz/handle/123456789/26990
dc.description.abstract Geographic variation in size and colour is studied in five populations of the house sparrow, Passer domesticus (Linnaeus), in New Zealand. Geographic variation in size does not, in general, follow a clinal pattern and is not consistent for all size characters studied. However, there is some evidence for a trend towards larger size in some characters in the Hastings and Christchurch populations. The smallest birds were found in Southland, which is the most southerly of the populations studied. Correlations with climatic variables do not give consistent evidence of conformity with Bergmann's and Allen's ecogeographic rules. In fact, the wing length in both sexes shows positive regression on mean daily maximum temperatures for January, the hottest month in the New Zealand summer. Some age variation and sexual dimorphism in size characters is displayed by the specimens examined. Males are larger than females, and adults than juveniles, for most characters studied. Geographic variation in belly colour in females shows a significant correlation with mean annual rainfall, but the correlation in males is weaker. The distribution of minor plumage variants is studied. These variants include the occurrence of chestnut on the black bib and on the rump of males, "Hispaniolensis"-type streaking on the breast of males, and belly-streaking in males and females. Since the inception of this study, Johnston and Selander (1971), using principal component analyses, have demonstrated in 16 skeletal characters of North American house sparrows the existence of covariant sets which bear different relationships to environmental factors. en_NZ
dc.format pdf en_NZ
dc.language en_NZ
dc.language.iso en_NZ
dc.publisher Te Herenga Waka—Victoria University of Wellington en_NZ
dc.title Geographic variation in the house sparrow (Passer domesticus) in New Zealand en_NZ
dc.type Text en_NZ
vuwschema.type.vuw Awarded Research Masters Thesis en_NZ
thesis.degree.discipline Zoology en_NZ
thesis.degree.grantor Te Herenga Waka—Victoria University of Wellington en_NZ
thesis.degree.level Masters en_NZ
thesis.degree.name Master of Science en_NZ

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account