1. 1. Stopover moult conditions influence plumagehue& breeding dynamics inBullocks orioles(Icterus bullockii )Orri Greaves
2. 2. 4th year Bachelor of ScienceMajor in Animal BiologyAnimal enthusiast
3. 3. Outline1. Background2. Questions3. Methods4. Results5. Conclusions6. Future Work
4. 4. Background(Pillar unpublished data)
5. 5. Questions1. Does C or N predictvariation in plumagehue?2. Do moult conditionsinfluence breedingdynamics?
6. 6. Study SitesFantasticPropertyKnutsfordCampground
7. 7. RiversTrailTranquille River
8. 8. Field Work
9. 9. Lab WorkLower hue =more orangeHigher hue = more yellowLower C = wetter habitatHigher N = eating at a lowertrophic level
10. 10. ResultsAdult maleFirst year maleAdult female
11. 11. Tail: n = 28, p = 0.05Breast: n = 27, p = 0.04n = 28p = 0.02
12. 12. Conclusions1. Adult males with diets at a lowertrophic level have more orangetails.2. Adult males feeding at a lowertrophic level arrive earlier onthe breeding grounds
13. 13. Future Work
14. 14. Acknowledgements Dr. Matthew Reudink Dr. Nancy Flood Andrew Pillar Steve Joly Glenn D. and the Kamloops Naturalist Club The lab
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