Sex and age differences in site fidelity, food resource tracking, and body condition of wintering Kirtland's warblers (Setophaga kirtlandii) in the Bahamas
Distribution of nonbreeding migrant birds in relation to variation in food availability has been hypothesized to result from the interaction of dominance hierarchies and variable movement responses, which together may have sex- and age-specific consequences. We predicted that site fidelity, movement...
| Main Author: | |
|---|---|
| Corporate Author: | |
| Other Authors: | , , |
| Format: | eBook |
| Language: | English |
| Published: |
Washington, DC
American Ornithologists' Union
2014
|
| Series: | Ornithological Monographs
|
| Subjects: | |
| Online Access: | |
| Collection: | BioOne Book Series - Collection details see MPG.ReNa |
Table of Contents:
- Methods:
- Study area
- Habitat characterization
- Captures and banding
- Site fidelity; Factors affecting fruit abundance
- Food availability per study site
- Ocean Hole space use and food resources
- Analyses and definitions
- Statistical tests
- Fruit abundance model selection
- Overwinter site persistence model selection. Results: Habitat variation among study sites
- Fruiting phenology
- Fruit abundance modeling
- Variation in food availability
- Fruit
- Foliage arthropods
- Ground arthropods
- Seasonal change in food resources within a winter
- Correlation of food-resource measures
- Diet composition
- Sex and age differences in captures
- Overwinter site persistence
- Annual return to a study site
- Site persistence in relation to food abundance and sex and age
- Modeling overwinter site persistence: models with arthropod and fruit biomass
- Modeling overwinter site persistence : models with fruit biomass
- Study-site shifts in relation to food abundance
- Late-winter warbler abundance at the fruit-rich OH site
- Late-winter warbler abundance and food-resource biomass
- Changes in physical condition
- Changes in corrected body mass
- Changes in fat scores
- Departure schedules
- Changes in physical condition with rainfall
- Effect of rainfall on corrected body mass in different periods
- Effect of rainfall on fat levels during different periods
- Annual return in relation to corrected body mass. Discussion:
- Factors affecting fruit abundance
- Variation in study-site food abundance
- Habitats with low arthropod biomass
- Overwinter site persistence
- Site fidelity and survival
- Annual return
- Role of dominance
- Late-winter warbler abundance and food resources
- Differences in corrected body mass and fat
- Rainfall and body condition
- Annual return and corrected body mass
- Conservation implications.