Birds of Indian Subcontinent

Nest-Site Characteristics of Open-Nesting Birds in Riparian Habitats in Iowa

Publication Type:Journal Article
Year of Publication:1986
Authors:Stauffer, DF, Best, LB
Journal:The Wilson Bulletin
Date Published:1986
ISBN Number:00435643
Keywords:Agelaius, Agelaius phoeniceus, Columbidae, Corvidae, Cyanocitta, Cyanocitta cristata, Dumetella, Dumetella carolinensis, Emberizidae, Erithacus, Erithacus rubecula, Galeoscoptes, Galeoscoptes carolinensis, Garrulus, Garrulus glandarius, Geothlypis, Geothlypis trichas, Icteridae, Melospiza, Melospiza melodia, Mimidae, Muscicapidae, Parulidae, Passerella, Passerella melodia, Toxostoma, Toxostoma rufum, Trichas, Turdidae, Turdus, Turdus iliacus, Turdus maximus, Turdus merula, Turdus migratorius, Zenaida, Zenaida macroura, Zenaidura, Zenaidura macroura, Zonotrichia, Zonotrichia melodia
Abstract: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 relationships 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 migratorius) were not different (P > 0.05) from those of Blue Jays (Cyanocitta cristata) and Mourning Doves (Zenaida macroura), 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 (Dumetella carolinensis) and Brown Thrashers (Toxostoma 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 trichas) and Song Sparrows (Melospiza melodia), 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 birds.
Short Title:The Wilson Bulletin
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith