A common potoo (Nyctibius griseus) remains lethargic throughout the hottest hours of the day
Read MoreWoodpeckers taste sweet, but wrynecks lost the ability to taste sugars. Photo: © Charles Thomas (Macaulay Library ML180000101)
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Read MoreSpecialized metabolic, respiratory and cardiovascular systems sustain the neuromuscular demands of physically demanding courtship
Read MoreA look into the physiology of spring migration
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