"As a scientist studying animals, not humans, I am also concerned about how our verdict of cheating affects our views of the animals themselves. Some of the early papers on extra-pair paternity in birds are interestingly divided in whom is portrayed as the active party in the behavior. Initially, there seemed to be two approaches, neither one particularly favorable to females. Either the males were roaming around taking advantage of hapless females waiting innocently in their own territories for the breadwinner males to come home with the worms, or else females were brazan hussies, seducing blameless males who otherwise would not have strayed from the path of moral righteousness into turpitude. One scientist refers rather peevishly to "female promiscuity" in blackbirds. Several papers, including one published in the prestigious journal Nature, call young birds fathered by males not paired with the mother as "illegitimate," as if their parents had tiny avian marriage licenses and chirped their vows (Gyllensten et al. 1990, Hassequist et al. 1995, Bjornstad and Lifjeld 1997)... A paper on Tasmanian native hens, birds with a rather complex set of relationships between the sexes, discussed what appearsto be polyandry, multiple males associated with a single female (Maynard Smith and Ridpath 1972). The paper refers to this behavior as "wife-sharing," but I have never seen multiple females associated with a male, its mirror image, and a common mating pattern, called "husband-sharing". Making the males the active parties (they "share" the female, as if she were a six-pack of beer), may reduce the likelihood of noticing what the females do, of seeing things from their point of view. Similarly, if we only see female baboons as mothers, we are less likely to notice that in fact their relationships, not those of males, determine troop structure and movement (Smuts 1999)."
--- Marlene Zuk, Animal Models and Gender, from Gender in Cross-Cultural Perspective, 4th ed.