| 1
| Abstract
|
| 5
| Introduction
|
| 5
| Eared Grebe
|
| 6
| Methods
|
| 8
| The Annual Cycle at Mono Lake
|
| 8
| Chronology
|
| 9
| Composition of the population
|
| 11
| Size of the Mono Lake flock
|
| 11
| Annual variation
|
| 12
| Behavior
|
| 12
| Distribution
|
| 14
| Daily movements
|
| 14
| Water use
|
| 16
| Interactions
|
| 18
| Food and Foraging
|
| 18
| Food
|
| 19
| Foraging behavior
|
| 20
| The ingestion of feathers
|
| 22
| Energetics
|
| 24
| Mass
|
| 25
| Molt
|
| 25
| Flightlessness
|
| 28
| Mortality
|
| 28
| Seasonal pattern
|
| 29
| Sources and extent of mortality
|
| 30
| Migration
|
| 30
| Departure from Mono Lake
|
| 31
| Other staging areas
|
| 32
| Winter range
|
| 33
| Migration routes
|
| 34
| Wilson's Phalarope
|
| 35
| Methods
|
| 36
| The Annual Cycle at Mono Lake
|
| 36
| Chronology
|
| 36
| Composition of the population
|
| 36
| Size of the Mono Lake flock
|
| 38
| Annual variation
|
| 38
| Behavior
|
| 38
| Distribution and daily movements
|
| 39
| Hyperphagia
|
| 39
| Roosts
|
| 40
| Use of fresh water
|
| 41
| Interactions
|
| 41
| Food and Foraging
|
| 41
| Food
|
| 43
| Foraging behavior
|
| 43
| Mass
|
| 46
| Sampling
|
| 46
| Molt
|
| 46
| Mortality
|
| 46
| Migration
|
| 46
| Departure from Mono Lake
|
| 46
| Concentration points
|
| 52
| The number of Wilson's Phalaropes
|
| 52
| Migration routes: a synthesis
|
| 53
| Flight range
|
| 53
| The Use of Saline Lakes
|
| 57
| Epilogue
|
| 58
| Acknowledgments
|
| 58
| Literature Cited
|
| Appendices
|
| 64
| I. Eared Grebe populations at Mono Lake, California, 1981-1987
|
| 67
| II. Mortality patterns of Eared Grebes at Mono Lake, California, 1982-1984, based on beached-bird surveys
|
| 68
| III. Size and age composition of Wilson's Phalarope populations at Mono Lake, California, Lake Abert, Oregon, and Great Salt Lake, Utah, 1980-1987
|
| 71
| IV. Status of Wilson's Phalaropes in fall and winter migration in Middle and South America
|
| 72
| V. The fall migration of Wilson's Phalaropes: evidence from museum collections
|
| Cover to Cover
|
