Epaulet size and current condition in red-winged blackbirds: examining a semistatic signal, testosterone, immune

Loren Merrill1, Tara E Stewart, Paulina L González-Gómez

  • 1Illinois Natural History Survey, University of Illinois, Urbana-Champaign, Illinois 61820; 2Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, California 93106; 3Department of Animal Biology, University of Illinois, Urbana-Champaign, Illinois 61820; 4Department of Neurobiology, Physiology and Behavior, University of California, Davis, California 95616; 5Department of Biology, University of Missouri, St. Louis, Missouri 63121.

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