1. Maternal effects as adaptations;Mousseau,1998
2. Maternal and paternal effects in birds. Effects on offspring fitness;Price,1998
3. Yolk is a source of maternal testosterone for developing birds;Schwabl;Proc Natl Acad Sci U S A,1993
4. Golden eggs: maternal manipulation of offspring phenotype by egg androgen in birds;Gil;Ardeola,2003
5. Why egg yolk is yellow;Blount;Trends Ecol Evol,2000