Hummingbird torpor in context: duration, more than temperature, is the key to nighttime energy savings

Shankar A, Schroeder RJ, Wethington SM, Graham CH & Powers DR
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Shankar, A., Schroeder, R. J., Wethington, S. M., Graham, C. H., & Powers, D. R. (2020). Hummingbird torpor in context: duration, more than temperature, is the key to nighttime energy savings. Journal of Avian Biology, 51(5), e02305 (14 pp.). https://doi.org/10.1111/jav.02305