Collapse of desert bird populations likely due to heat stress from climate change

Last year, biologists discovered that bird populations in the Mojave Desert had crashed over the past 100 years. The biologists now have evidence that heat stress is a key cause. Simulations with a computerized 'virtual bird' suggest that with higher temperatures, birds need more water to keep cool. Larger insectivores or carnivores should be most affected, and small seed-eaters less so if drinking water is available: just as the biologists reported last year.

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