The white chalky portion of a mute is known as what?

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Multiple Choice

The white chalky portion of a mute is known as what?

Explanation:
In birds, waste is excreted as two parts: feces and urates. The white chalky portion seen in a bird’s droppings is the urates, which are solidified uric acid. This form of nitrogenous waste helps conserve water, since birds excrete uric acid rather than a dilute urine. The darker portion is the fecal matter from digestion. Saliva, mucus, and bones aren’t the white waste component in droppings, so the chalky white part specifically identifies urates.

In birds, waste is excreted as two parts: feces and urates. The white chalky portion seen in a bird’s droppings is the urates, which are solidified uric acid. This form of nitrogenous waste helps conserve water, since birds excrete uric acid rather than a dilute urine. The darker portion is the fecal matter from digestion. Saliva, mucus, and bones aren’t the white waste component in droppings, so the chalky white part specifically identifies urates.

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