Data from: Hovering in the heat: effects of environmental temperature on heat regulation in foraging hummingbirds

Donald R. Powers, Kathleen M. Langland, Susan M. Wethington, Sean D. Powers, Catherine H. Graham & Bret W. Tobalske
At high temperature (>40 ºC) endotherms experience reduced passive heat dissipation (radiation, conduction, and convection) and increased reliance on evaporative heat loss. High temperatures challenge flying birds due to heat produced by wing muscles. Hummingbirds depend on flight for foraging, yet inhabit hot regions. We used infrared thermography to explore how lower passive heat dissipation during flight impacts body-heat management in broad-billed (Cynanthus latirostris, 3.0g), black-chinned (Archilochus alexandri, 3.0g), Rivoli’s (Eugenes fulgens, 7.5g), and blue-throated...
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