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exists and is an alternate of . The correct term is Guano. It is the feces and urine of seabirds, cave-dwelling bats, and seals. Guano manure is a highly effective fertilizer due to its high phosphorus and nitrogen content and its relative lack of odor compared to other forms of organic fertilizer such as horse manure.
Guano can appear in a wide range of colors including white, yellow, brown, hazel, gray, black, or red, but color does not indicate or influence its quality. One of the factors that can determine the fertilizer quality of bat guano is the dietary habits of the different bat species who inhabit a cave. Some bats are vegetarian, eating primarily fruits. Other bats are carnivorous; their diet usually consists of insects and similar small critters.