Articles on Animals

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European stonechat (Saxicola rubicola) eating a butterfly with black-and-orange warning colours. Stanislav Harvancik

Warn, hide or stand out? How colour in the animal world is a battle for survival

A global experiment has helped explain why some animals use stealthy patterns to hide from predators, while others use warning colours to avoid being eaten.
The difficult-to-detect meningeal worm is spread by white-tailed deer and is a notorious killer of moose. AP Photo/Jim Cole, File

Parasitic worms bury themselves in the brains of moose and elk – a new test can help diagnose these animals to prevent disease spread

White-tailed deer host these brain worms, but they don’t actually get the disease, which makes it harder for biologists to monitor its prevalence.

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