Guano

excrement

Oct 10, 2023 - 16:34
 0  17

guano, accumulated excrement and remains of birds, bats, and seals, valued as fertilizer. Bird guano comes mainly from islands off the coasts of Peru, Baja (Lower) California, and Africa heavily populated by cormorants, pelicans, and gannets. Bat guano is found in caves throughout the world. Seal guano has accumulated to great depths on the Isla Lobos de Tierra and Islas Lobos de Afuera (Lobos Islands), off northwestern Peru. Bat and seal guano are lower in fertilizer value than bird guano, which contains about 11 to 16 percent nitrogen, 8 to 12 percent phosphoric acid, and 2 to 3 percent potash.

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