Field Frame Friday: How do you like your eggs?

Due to warmer temperatures, egg incubation in tropical birds presents a different set of challenges than temperate species. To regulate temperatures, lesser noddies (Anous tenuirostris) will rotate the egg around the nest every 50 minutes, and when ambient temperatures get above 30℃ (86 ℉) , parents will actually lift off of the egg, and depend on the microclimate of the nest location to assist in appropriate incubation temperatures.

[Photo by Nick Chudeau and caption by Karli Chudeau]


Hart, L. A., Downs, C. T., & Brown, M. (2016). Sitting in the sun: Nest microhabitat affects incubation temperatures in seabirds. Journal of thermal biology, 60, 149-154.

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