Some Adaptations of Marsh-nesting Blackbirds
The variety of social systems among the New World blackbirds (Family Icteridae) and the structural simplicity of their foraging environment provide excellent opportunities for testing theorics about the adaptive significance of their behavior. Here Gordon Orians presents the results of his many years of research on how blackbirds utilize their marsh environments during the breeding season. These results stem from information he gathered on three species during ten breeding seasons in the Pacific Northwest, on Red-winged blackbirds during two breeding seasons in Costa Rica, and on three species during one breeding season in Argentina.
The author uses models derived from Darwin's theory of natural selection to predict the behavior and morphology of individuals as well as the statistical properties of their populations. First he tests models that predict habitat selection, foraging behavior, territoriality, and mate selection. Then he considers some population patterns, especially range of use of environmental resources and overlap among species, that may result from those individual attributes. Professor Orianns concludes with an overview of the structure of bird communities in marshes of the world and the relation of these patterns to overall source availability in these simple but productive habitats.
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The Approach and the Subjects
12 The Theater
13 Materials and Methods
Marshes as Providers of Resources for Blackbirds
21 Quantity of Emergence
22 Temporal Pattern of Emergence
23 Abundance of Insects on the Uplands
The Adaptations Selection of Habitats Territories and Mates
55 Variability in Foods and Foraging
The Patterns Competition Overlap and Community Structure
61 ShortTerm Effects of Competition
62 LongTerm Effects of Competition
63 Competition and Size
Adaptations Among Argentine Marshnesting Blackbirds
71 The Species of Blackbirds Breeding in Argentine Marshes
31 Habitat Selection by Males
32 Habitat Selection by Females
33 Predictions and Tests about Habitat and Mate Selection
34 Sizes of Territories
35 The Cues Used by Blackbirds in Selecting Their Territories
The Adaptations Foraging Behavior
42 Tests of Foraging Theory
43 Tests of CPF Theory
The Patterns Variability in Use of Resources
52 Range of Nest Sites Occupied
53 Breeding Seasons
54 Clutch Sizes
72 Foods and Foraging
73 Patch Utilization While Foraging
74 Dietary Breadths
Of Birds and Marshes
82 Nonpasserine Birds in Marshes
83 Avian Social Systems in Marshes
84 Island Biogeography of Marshes
85 Effects of Blackbird Predation on Odonate
Thoughtful Foragers: A Study of Prehistoric Decision Making
Steven J. Mithen
Limited preview - 1990
JSTOR: Some Adaptations of Marsh-Nesting Blackbirds
Some Adaptations of Marsh-nesting Blackbirds. By Gordon H. Orians. Monographs in Population Biology No. 14. Princeton University Press, Princeton, ...
Red-winged and Yellow-headed Blackbird Nesting Habitat in a ...
Some adaptations of marsh-nesting blackbirds. Princeton Univ. Press, Princeton, NJ. , AND mf WILLSON. 1964. Interspecific territories of birds. ...
elibrary.unm.edu/ sora/ JFO/ v054n03/ p0324-p0326.html
Agris Search Results
Titles, Some adaptations of marsh-nesting blackbirds. Personal Authors, Orians, Gordon H. Publisher, Princeton University Press ...
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Ian gordon Libri in lingua straniera di Ian Gordon - Unilibro
Libro in lingua: Some Adaptations of Marsh-Nesting Blackbirds. Autore: Gordon H. Orians Editore: BERTRAMS PRINT ON DEMAND Genere: Lingua Inglese data publ. ...
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