(Phys.org) —Birds in female-dominated populations are more likely to ditch and 'divorce' their mates while promiscuity increases in predominantly male environments, according to new research.
New research has shown farmers may be able to determine the sex ratios of lambs by raising omega-6 fatty acids in the diets of breeding stock, a discovery that could have major benefits for industry.
A new study led by a researcher at the Stanford University School of Medicine shows that mammalian species can "choose" the sex of their offspring in order to beat the odds and produce extra grandchildren.
(Phys.org) —Only 22 to 28 percent of the remaining adult population of the endangered Hawai'i creeper (Oreomystis mana) found in the southern portion of the Hakalau Forest National Wildlife Refuge is female, raising concerns ...
A century old mystery as to why, for some animals, it's the father rather than the mother that takes care of their young has been cracked by scientists at the University of Sheffield and University of Bath.
(Phys.org)—At first glance, the northern muriqui monkey is a prime conservation success story.
Female parrot finches can match their offspring's gender to prevailing living conditions, producing more sons in lean times, scientists in Australia said Wednesday.
There must be something in the warm breeze. A study on bats by a University of Calgary researcher suggests that bats produce twice as many female babies as male ones in years when spring comes early.
Hidden cameras in the jungles of Indonesia's Java island have captured images of 35 critically endangered Javan rhinos, including five calves, an official said Friday.
Great tits who have as many sons as daughters acquire more grandchildren than great tits with an uneven family composition. That is because their children are reproductively more successful concludes NWO researcher Reinder ...