Pigs, rats, cats and mongooses, all brought to the island decades earlier by humans, were to blame for their demise, preying ...

Male bonobos can decipher females' unreliable fertility signals, allowing them to focus their efforts on matings with the ...

A Galápagos bird species is stunning behaviorists with their “freewheeling” lifestyles. Described in the journal PLOS One, ...

New research shows male bonobos use subtle, hidden cues - not just swelling - to track a female’s fertile days with ...

Hamilton, the zoologist who dedicated his life to saving Africa’s elephants from systematic slaughter—despite being nearly ...

Since being collared in Zambia two years ago, a young bull elephant known to researchers as Z16 has walked nearly 12,000 ...

The numbers were horrifying. The censuses showed Africa’s elephant population crashing in number from 1.3m in 1979 to 600,000 ...

Male bonobos are able to interpret female fertility cues even when those signals do not reliably indicate ovulation. This ability helps them direct their mating efforts toward times when conception is ...

Male bonobos are able to decipher confusing fertility signals from females, say scientists. Most female mammals are only ...

Studying fin scrapes in a closed group of orcas shows that postmenopausal mothers put energy into helping their sons, but not daughters or grandchildren. A pod of orca, including a young calf, forage ...