title: Sex ratio manipulation and selection for attractiveness.
abstract: Laboratory experiments performed on a monogamous estrildid, the zebra finch (Poephila guttata), indicate that sex ratio of offspring is affected by non-genetic markers (colored plastic leg bands) that vary in attractiveness to birds. Results suggest that natural selection favors individuals that produce offspring of the sex of the more attractive parent within a breeding pair.
authors.forename: N
authors.initials: N
authors.lastname: Burley