Nest-site characteristics of open-nesting birds in riparian habitats in Iowa
Nest-site characteristics of open-nesting birds in riparian habitats in Iowa
复制标题
爱荷华州河岸栖息地开放筑巢鸟类的巢址特征
DOI：
10.1071/9780643090033
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
L. Best
中科院分区：
文献类型：
--
作者：
D. Stauffer;L. Best
we analyzed interrelationships among nest sites of 13 open-nesting bird species of riparian communities in Iowa. Cluster analysis of a Euclidean distance matrix, based on the nesting substrate and mean values of nest-site measurements, identified three nesting assemblages comprising species nesting primarily in trees (six species), shrubs (four), or herbaceous cover (three). Discriminant canonical analyses were used to elucidate rela- tionships among species within each nesting group. Two canonical axes separated most species nesting in trees along gradients of (I) nest and support-structure height and (II) support-limb diameter, distance to periphery of substrate, and nest height. Nest sites of American Robins (Turdus migrutorius) were not different (P > 0.05) from those of Blue Jays (Cyanocitta cristata) and Mourning Doves (Zenaidu mucrouru), which did differ from each other. Two canonical axes, representing (I) nest and support-structure height and (II) support-limb diameter and cover at the nest, separated all shrub-nesting species except Gray Catbirds (Dumetellu curolinensis) and Brown Thrashers (Toxostomu rufum). One significant (P < 0.05) canonical axis, representing nest and relative nest height and cover at the nest, separated Red-winged Blackbirds (Agelaius phoeniceus) from Common Yellowthroats (Geothlypis trichus) and Song Sparrows (Melospizu melodiu), which did not differ from each other. Species with similar nest sites tended to have different habitat use patterns. Nest-site analysis should be considered when investigating intra-community relationships among
