The evolutionary pros and cons of group living vary for males and females, according to a study of ostriches reported today in eLife. The findings help explain why the size of ostrich groups living can vary so widely in the wild, showing that the optimal size of a group depends on the balance of males […]
Tag: sex
Sandpipers go the extra 8,000 miles to have as much sex as possible
A bird smaller than a city pigeon has been recorded flying 13,000km (8,000 miles) in just one month to have sex with as many females as possible In behaviour never witnessed before, male pectoral sandpipers were observed travelling to as many as 24 different “breeding sites” in northern Alaska within a single season, a team […]
Central bearded dragons change sex when the heat is on
Dragon sex. It turns out it’s complicated. Whether the Australian central bearded dragon grows up to be a male or a female depends not only on its genetics but also on the temperature of the nest in which it is incubated. What’s more, the females with male sex genes grow up to display many male […]