No evidence that carotenoid pigments boost either immune or antioxidant defenses in a songbird

Rebecca E. Koch, Auburn University
Andreas N. Kavazis, Auburn University
Dennis Hasselquist, Lund University
Wendy R. Hood, Auburn University
Yufeng Zhang, Auburn University
Matthew B. Toomey, Washington University School of Medicine in St. Louis
Geoffrey E. Hill, Auburn University

Abstract