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Posts From Kaija Gahm

A Gecko Opera: Reptile Vocal Plasticity and the Lombard Effect

A Gecko Opera: Reptile Vocal Plasticity and the Lombard Effect

Humans, and many other animals, reflexively increase the volume of their vocalizations in a noisy environment, a phenomenon called the Lombard effect. A new study on geckos, one of the first to examine vocal plasticity in a reptile, found that while geckos do not exhibit the Lombard effect, they do modify their calls in other ways so as to more easily be heard over noise.

Q&A: Why Do Killer Whales Go Through Menopause?

Q&A: Why Do Killer Whales Go Through Menopause?

Why do some species, including humans and killer whales, stop reproducing long before the end of their lives? A new study from Exeter University suggests that older females may gain adaptive advantages by helping to raise their daughters’ calves instead of raising their own.