Indeed, Dr Kraak's analysis of the male's courtship dance is that it is designed as much to let him stop a female from laying in his nest before he has assessed her as it is to show himself off.
Standard evolutionary theory says that females should generally be the choosy sex because a female's maximum reproductive output is more limited than a male's.
He is country's top-selling male act, one of its top touring draws and recently won the Academy of Country Music's male vocalist of the year award.
The female, Tian Tian, also left her scent all round the male's outdoor pen.
"I saw the female look over the male's shoulder and look towards the child, " she said.
Typically, a strange male entering another male's cage is met with a fight.
Manx BirdLife is urging anyone who hears the male's "distinct call" to contact the charity on its website.
The earl's male cousin and the cousin's son both die on the Titanic.
The low-quality females repeatedly pecked the key that played a low-quality male's song.
The male's sole purpose seems to be fertilizing the female's eggs, Katz said.
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Each male sports a white patch on his forehead, and the larger a male's patch, the more attractive the females find him.
Not surprisingly, the bonds between males and females are unusually strong in these species, so the male's confidence in his fatherhood is high.
By combining her genes with a male's, a female halves her genetic contribution to her offspring, and subsequent generations see it halved again and again.
Somehow, the male's odd behaviour must offer an evolutionary advantage.
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Complex male bowerbird behaviour including dance routines, mimicking of other birds and the building of the bower may allow females to get an idea of a male's cognitive performance.
Ms. Cook speculates that it could be because they did not understand the male's reproductive role, in which case the female body must have seemed miraculous and worthy of respect and worship.
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Besides being cheap, these have the advantage that previous research has shown that a male's level of flashiness in the eyes of a female can be manipulated by putting coloured rings on his legs.
And, since eggs are more costly to make than sperm, the number of her descendants is limited by the number of eggs she can grow, while a male's posterity depends more on the number of females he can mate with.
Besides, whether she would accept a membership is completely irrelevant to the question of the appropriateness of the club's all-male policy and IBM's tacit support of it, and it doesn't get the club out of its bind anyway.
Centre manager Peter Ferns said the male osprey was not the reserve's resident male, who has not yet been seen but could still arrive some time after his partner.
Soon after, police were contacted by the party's male survivor who told them more people were missing.
Women rarely do well in Indonesia's male-oriented divorce courts, and Sukemi was ordered to quit their small home.
Under the traditional model, women who agreed to meet a matchmaker's male clients were doing the matchmaker a favor.
"Let's not watch fireworks, let's make 'em instead, " the rap's male vocalist croons.
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The boom, since the early 2000s, has provided jobs for women who previously had few opportunities in Bangladesh's male-dominated villages.
The RSPCA said part of a crossbow bolt lodged inside the male swan's body and missed its heart "by millimetres".
He has spent the last few weeks trying to outsmart an older black and white spotted male that's missing half an ear.
"The victim's male friend fought the attackers bravely, he tried to save his friend, but he was badly beaten up, " Mr Kumar said.
But credit is also due to the magazine's male leaders--notably my grandfather Malcolm Forbes and editor Jim Michaels--who deeply embraced innovation, whatever the source.
The cub, conceived through artificial insemination, was 14-year-old mother Mei Xiang's second in seven years with 15-year-old Tian Tian, the zoo's male giant panda.
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