Birds Hearts Archives | Earth Life An encyclopedia of life on earth Wed, 25 Oct 2023 02:28:15 +0000 en-US hourly 1 https://earthlife.net/wp-content/uploads/cropped-Life-Earth-Favicon-512x512-1-32x32.webp Birds Hearts Archives | Earth Life 32 32 The Bird Circulatory System, Heart & Blood https://earthlife.net/the-bird-circulatory-system-heart-blood/ https://earthlife.net/the-bird-circulatory-system-heart-blood/#respond Sun, 25 Jun 2023 11:43:00 +0000 https://www.earthlife.net/?p=363 The Bird Circulatory System, Heart & Blood – Their Circulatory System Explained Active flapping flight needs a lot of energy to maintain. This, in turn, necessitates an efficient and effective circulatory system. And this means that birds’ hearts beat fast. Very fast. Ruby throated hummingbirds’ heart beats at 615 beats per minute at rest. That is ten …

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