Uncategorized
- Animals
Moths mimic ‘Don’t eat me’ sounds
Moths that make clicking noises at predatory bats are mimicking a defensive signal made by other moths that click and also taste bad.
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In this article, the study is reported as the “first confirmed acoustic example of classic defensive mimicry.” Not so. In 1986, Matthew P. Rowe and colleagues published in Ethology an elegant study demonstrating that the burrowing owl’s hiss is acoustic defensive mimicry of the rattlesnake’s rattle. William K. HayesLoma Linda UniversityLoma Linda, Calif.
- Archaeology
Ancient beads found in northern Africa
Perforated shells found in a Moroccan cave indicate that northern Africans made symbolic body ornaments 82,000 years ago, long before Europeans did.
