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Similaire à Stopover moult conditions influence plumage hue & breeding dynamics in Bullock’s orioles - O Greaves
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Stopover moult conditions influence plumage hue & breeding dynamics in Bullock’s orioles - O Greaves
- 1. Stopover moult conditions influence plumage hue & breeding dynamics in Bullock’s orioles (Icterus bullockii ) Orri Greaves
- 2. 4th year Bachelor of Science Major in Animal Biology Animal enthusiast
- 3. Outline 1. Background 2. Questions 3. Methods 4. Results 5. Conclusions 6. Future Work
- 4. Background (Pillar unpublished data)
- 5. Questions 1. Does C or N predict variation in plumage hue? 2. Do moult conditions influence breeding dynamics?
- 6. Study Sites Fantastic Property Knutsford Campground
- 7. River’s Trail Tranquille River
- 8. Field Work
- 9. Lab Work Lower hue =more orange Higher hue = more yellow Lower C = wetter habitat Higher N = eating at a lower trophic level
- 10. Results Adult male First year male Adult female
- 11. Tail: n = 28, p = 0.05 Breast: n = 27, p = 0.04 n = 28 p = 0.02
- 12. Conclusions 1. Adult males with diets at a lower trophic level have more orange tails. 2. Adult males feeding at a lower trophic level arrive earlier on the breeding grounds
- 13. Future Work
- 14. Acknowledgements • Dr. Matthew Reudink • Dr. Nancy Flood • Andrew Pillar • Steve Joly • Glenn D. and the Kamloops Naturalist Club • The lab
- 15. References 1. Gray, D. 1996 Carotenoids and Sexual Dichromatism in North American Passerine Birds. The American Nat 148(3):453–480. 2. McGraw, K. 2006 Mechanics of carotenoid-based coloration. Bird Coloration Vol I. Harvard University Press. 177-242. 3. Svensson, P. & Wong, B. 2011 Carotenoid-based signals in behavioural ecology: a review. Behav 148(2):131–189. 4. Pyle, P., W. Leitner, L. Lozano-Angulo, F. Avilez-Teran, H. Swanson, E. Gómez Limón & M. Chambers. 2009 Temporal, Spatial, and Annual Variation in the Occurrence of Molt-Migrant Passerines in the Mexican Monsoon Region. The Condor 111(4):583-590. 5. Beal, F. 1910 Birds of California in relation to the fruit industry II. U.S. Dept Agricul Bull 34, Washington, D.C. 6. Reudink, M., C. Studds, P. Marra, T. Kyser & L. Ratcliffe. 2009 Plumage brightness predicts non-breeding season territory quality in a long-distance migratory songbird, the American redstart Setophaga ruticilla . J Avian Biol 40:34-41. 7. Saino, N., T. Szep, M. Romano, D. Rubolini, F. spina & A. Moller. 2004 Ecological conditions during winter predict arrival date at the breeding quarters in a trans-Saharan migratory bird. Eco Letters 7:21-25. 8. Currie, D., D. Thompson & T. Burke. 2000 Patterns of territory settlement and consequences for breeding success in the Northern WheatearOenanthe oenanthe . Ibis 142:389–398. 9. Reudink, M., P. Marra, T. Kyser, P. Boag, K. Langin, & L. Ratcliffe. 2009 Non-breeding season events influence sexual selection in a long-distance migratory bird. Proc R Soc B 276:1619-1629. 10. Kingma, S., M. Hall & A. Peters. 2012 Sperm storage reflects within- and extra-pair mating opportunities in a cooperatively breeding bird. Behav Eco & Sociobio 66(8):1115–1123. 11. Yezerinac, S. & P. Weatherhead. 1997 Reproductive synchrony and extra-pair mating strategy in a socially monogamous bird, Dendroica petechia . Animal Behav 54(6):1393–1403.