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Studies in Avian Biology - Number 7

Population Ecology of the Dipper (Cinclus mexicanus) in the Front Range of Colorado

Frank E. Price and Carl E. Bock


1 Introduction
4 Study Areas
10 Methods
10 Maps and Measurements
10 Banding
11 Determination of Sex and Age
11 Censusing
12 Determination of Territory Boundaries
13 Measures of Habitat Quality
16 Statistical Analyses
16 Annual cycle in the colorado front range
21 Population movement
21 Seasonal Movement in Altitude
23 Postbreeding Movement of Adults
26 Dispersal of Juveniles
28 Movement in Winter
31 Movement Between Drainages
33 Homing by Adult Dippers
33 Discussion of Movement
35 Population density and dispersion
36 Seasonal Trends in Population Density
38 Environmental Factors Affecting Dispersion
48 Social Factors Affecting Dispersion
59 Discussion of Density and Dispersion
60 Survival and productivity
60 Survival and Mortality
62 Productivity and Recruitment
70 Effect of Stochastic Events on Survival and Productivity
73 Discussion of Survival and Productivity
73 General discussion and conclusions
74 Front Range Dipper Populations
77 Population Regulation
80 Acknowledgments
80 Literature cited
Cover to Cover


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