Drawing on detailed data from their sixteen-year study of red-winged blackbirds in the marshes of Washington's Columbia National Wildlife Refuge, Beletsky and Orians analyze the information redwings use to make breeding-season decisions and the consequences these decisions have for lifetime reproductive success. Because male and female redwings make different, and often independent, decisions—males focus on territory acquisition and maintenance, while females must choose when and where to nest and how much energy to invest in reproduction—the authors have taken the novel approach of studying the sexes separately. Using analyses of observational data combined with field experiments and game-theoretical models, the authors provide new insights into the complex patterns of reproductive decision-making and breeding behavior in redwings. This book will be of interest to all who study social animals, including behavioral ecologists, evolutionary biologists, and ornithologists.
Payne (1984) and Clutton-Brock (1988) together have listed nine indices of the opportunity for sexual selection, some reasonable and some rather useless. One of the more reasonable indices has been applied to red-winged blackbirds: the ...
38. Bahr, Smith, Allison, and Hayden, Short, Swift Time, 14. 39. Lloyd, Aw-Aw-Tam Indian Nights, 30. 40. Donald M. Bahr, Pima and Papago Ritual Oratory: A Study of Three Texts (San Francisco: Indian Historian, 1975), 77. 41.
Birdsong made easy to understand, lavishly illustrated with color photos, and accompanied by more than 700 online recordings From a leading expert, Birdsong for the Curious Naturalist is a basic, how-to guide that teaches anyone--from ...
A natural history of birds provides information on more than nine hundred species of birds, including what they eat, where they build their nests, how many eggs they lay, what habitat they choose, when they migrate, and their current ...
Here Gordon Orians presents the results of his many years of research on how blackbirds utilize their marsh environments during the breeding season.
The book will be of interest to scholars of Indigenous, American Southwestern, and agricultural history.
The book reviews the life histories of red-winged blackbirds, yellow-headed blackbirds, common grackles, and brown-headed cowbirds. It provides in-depth coverage of the functional roles of blackbirds in natural and agricultural ecosystems.
There are also the Stokes Field Guide to Bird Songs: Eastern Region and the Stokes Field Guide to Bird Songs: Western Region in audiobook or audio CD form. I have not used any of these. Some birding apps also offer convenient regional ...
This book presents a detailed guide to hand-rearing techniques for raising young birds, providing complete coverage of a wide variety of avian species and taxonomic groups for all avian care professionals.
A round trip Ty2, dictates a selection of prey » C2 (from Orians and Pearson, 1979). TRAVELING TIME TIME IN PATCH Figure 4.3. Optimal load size as a function of distance from central place for multiple-prey loaders.