guano

Their collective body heat raises the cave’s temperature to a sweltering 106°F, and the piles of guano beneath them are deep enough to bury the Statue of Liberty to her waist.

From The Wall Street Journal ● Jun. 19, 2026

"The historical records documenting how bird guano was applied to maize fields helped us interpret the chemical data and understand the regional importance of this practice," she said.

From Science Daily ● Mar. 7, 2026

The latter elements suggest the hearth was intentionally sealed with a mixture of guano and sand, which can protect plant materials within the hearth from catching fire—conditions needed to create tar.

From Science Magazine ● Nov. 22, 2024

Their guano, or dung, can also be used as fertilizer.

From Los Angeles Times ● Oct. 31, 2024

Coffee grounds, chicken skin, bat guano, and some kind of old fat.

From "The Assassination of Brangwain Spurge" by M.T. Anderson and Eugene Yelchin

It has been estimated that Texas guanos alone consume 6,600 tons of insects each year.

From Time Magazine Archive

Phosphatic guanos, as already pointed out, are similar in origin to nitrogenous guanos.

From Manures and the principles of manuring by Charles Morton Aikman

In long lines, as on Denderah's architraves, were bas-reliefs of beetles, turtles, ant-eaters, armadilloes, guanos, serpents, tongueless crocodiles:—a long procession, frosted and crystalized in stone, and silvered by the moon.

From Mardi: and A Voyage Thither, Vol. II by Herman Melville

According to Boussingault, some guanos contain small quantities of nitrates.

From Manures and the principles of manuring by Charles Morton Aikman

The only way in which adulteration can with certainty be detected, and the value of different guanos be determined, is by analysis, and the importance of this can easily be illustrated.

From Elements of Agricultural Chemistry by Thomas Anderson