The white chalky portion found in a mute's excreta is called what?

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Multiple Choice

The white chalky portion found in a mute's excreta is called what?

Explanation:
The white chalky portion in a mute swan’s droppings is urates. Birds excrete nitrogen waste as uric acid, which forms a white, pasty paste that blends with the dark fecal material in the cloaca. This uric acid waste is a water-conserving adaptation, unlike mammals that produce a liquid urine. So the white part isn’t urine or blood; it’s the urates, the uric acid component of the droppings.

The white chalky portion in a mute swan’s droppings is urates. Birds excrete nitrogen waste as uric acid, which forms a white, pasty paste that blends with the dark fecal material in the cloaca. This uric acid waste is a water-conserving adaptation, unlike mammals that produce a liquid urine. So the white part isn’t urine or blood; it’s the urates, the uric acid component of the droppings.

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