Testosterone Levels in Blackbirds — Blackbirds • abdData

Experimental manipulation of testosterone levels in male Red-winged Blackbirds (Agelaius phoeniceus) and resulting changes in antibody levels

Usage

Blackbirds

Format

A data frame with 13 observations on the following 6 variables.

before: a numeric vector
after: a numeric vector
log.before: a numeric vector
log.after: a numeric vector
diff.in.logs: a numeric vector
diff: a numeric vector

Source

Hasselquist, D., J.A. Marsh, P.W. Sherman, and J.C. Wingfield. 1999. Is avian immunocompetence suppressed by testosterone? Behavioral Ecology and Sociobiology 45: 167-175.