Long baleen whale mothers are more likely to have female calves than males, according to a new study led by the University of Washington. The findings contradict a popular evolutionary hypothesis ...

Panna (Madhya Pradesh): The elephant family at Madhya Pradesh’s Panna Tiger Reserve is growing. In a rare and joyful event, a female elephant named Anarkali has given birth to twin female calves, ...

UW researchers tested the hypothesis in marine mammals by comparing maternal length and fetal sex in more than 100,000 baleen whales. They found that the fetal sex ratio skews female for longer—and ...

Long baleen whale mothers are more likely to have female calves than males, according to a new study led by the University of Washington. The findings contradict a popular evolutionary theory ...