Common raven physiology
physiology of the common raven
The common raven (Corvus corax), also known as the northern raven, is a large, all-black passerine bird. Found across the Northern Hemisphere, it is the most widely distributed of all corvids. Their Northern range encompasses Arctic and temperate regions of Eurasia and North America, and they reach as far South as Northern Africa and Central America. The common raven is an incredibly versatile passerine to account for this distribution, and their physiology varies with this versatility. This article discusses its physiology, including its homeostasis, respiration, circulatory system, and osmoregulation.
Physiology
Habitat variation and physiological regulation
Maintaining homeostasis through internal regulatory mechanisms is directly affected by habitat variation. The common raven is considered to be a homeotherm, an endotherm, and a regulator, so it is required to adjust its internal physiological state in response to environmental changes. Food habitats influence the metabolic rate of the Common Raven. Since common ravens are omnivores, metabolic rates must fluctuate according to the type of food consumed. According to one study, species that consume only fruit possess lower metabolisms compared to species that ate both fruit and insect material.
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