Desert Songbirds May Face Expanding Threat of Lethal Dehydration

Alexander Gerson, Biology, is a co-author of a new study of songbird dehydration and survival risk during heat waves in the United States desert Southwest that suggests that some birds are at risk of lethal dehydration and mass die-offs when water is scarce, and the risk is expected to increase as climate change advances. Using physiological data, hourly temperature maps and modeling, Gerson, along with first author Tom Albright at the University of Nevada, Reno, and co-author Blair Wolf at the University of New Mexico, investigated how rates of evaporative water loss varied in five bird species with varied body mass. They mapped potential effects of current and future heat waves on lethal dehydration risk for songbirds in the Southwest and how rapidly this can occur in each species.

Read more at Proceedings of the National Academy of Sciences. article

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