"Males may forgo displays of conspicuous courtship and attempt to gain some reproductive success in other ways," said co-author biology professor Jeffrey Hutchings of Dalhousie University.
In other words, if there are a lot of other males around, the males of some species use stealth to outwit their competitors. They prove to be lovers, not fighters. While the brutes are slugging it out, the suaver males whisk away the females.
But if there aren't many ladies around, males often try to guard the female they are with to prevent other guys from getting a chance at love.
"Males guard females until they are ready to mate in order to ensure some degree of reproductive success by preventing sperm competition from subsequent males," said Grant.
But watch out lady animals, that hero might turn out to be a zero, if other females show up.
"However, if females are abundant and encounters are frequent, males may abandon females who are not receptive to find one who is ready to mate," said Grant.
You know what... some of those situations and strategies don't sound too different from what a biologist could observe on the human dating scene.