How to Use guano in a Sentence

guano

noun
  • The team also found guano, or bat and bird poop, in the hearth.
    — Alexa Robles-Gil, Smithsonian Magazine, 2 Dec. 2024
  • The smell of bat droppings, or guano, wafts up from the cave when the breeze is low.
    — Jack Armstrong, The Arizona Republic, 17 Aug. 2024
  • He was jolted out of his reverie by a whiff of guano in the breeze.
    — Ben McGrath, New Yorker, 3 Nov. 2025
  • With fewer bats around, there is half as much guano collected as a decade ago.
    — New York Times, 17 Jan. 2021
  • Their guano is mined from caves for fertilizer.
    — The Conversation, Fortune, 14 May 2026
  • The lice live in dry caves and feed predominantly on bat guano.
    — Elizabeth Kolbert, New Yorker, 22 June 2026
  • Usually just by seeing them or the piles of guano that are left under their roost site.
    — Margeaux Sippell, BostonGlobe.com, 16 Apr. 2018
  • The poop, or guano, of infected birds is teeming with viruses.
    — Cnn.com Wire Service, The Mercury News, 27 Dec. 2024
  • The guano in their colonies must smell pleasant, comforting, rather than the barnyard stink that hit my own nose.
    — Blair Braverman, Condé Nast Traveler, 24 Dec. 2024
  • While rabies poses a rare threat, bat guano is the most serious concern.
    — Kylie Martin, Detroit Free Press, 27 June 2023
  • The bats live above the gym bleachers in a small utility closet, where the floor is covered in guano.
    — Emily Schwing, NPR, 4 Mar. 2025
  • Bat guano or infected aerosols were the likely sources of transmission.
    — Judy Stone, Forbes, 13 Feb. 2023
  • Mouse poop is usually left in a trail along the rodent's path, while guano is found in piles under roosting spots.
    — Brandee Gruener, Southern Living, 1 July 2026
  • The guano, which is dark enough to see from space, inspired the scientists to use the streaks of excrement to track down the colonies.
    — Julia Gomez, USA TODAY, 24 Jan. 2024
  • The discoveries were made by spotting the distinctive red-brown guano patches the birds leave on the ice.
    — Damian Carrington, Wired, 8 Aug. 2020
  • The discoveries were made by spotting the distinctive red-brown guano patches the birds leave on the ice.
    — Mark Harris, Wired, 29 July 2021
  • The researchers note that the deaths of these men mark a concerning trend in bat guano being used as cannabis fertilizer.
    — Tim Ryan, Newsweek, 17 Dec. 2024
  • Their guano adds the nutrient nitrogen to the islands, leading to big changes in the ecosystem.
    — Jason Daley, Smithsonian, 12 July 2018
  • Since the guano produced by the birds eventually kills the nest trees, heron rookeries have a limited life span.
    — Paul A. Smith, Milwaukee Journal Sentinel, 12 June 2021
  • Their characteristic brown guano can be seen against the backdrop of Antarctic ice even from space.
    — Cameron Pugh, The Christian Science Monitor, 5 Mar. 2024
  • Around the same time, Vogt was hired to study a baffling decline in seabird guano, then widely used as fertilizer.
    — BostonGlobe.com, 27 Apr. 2018
  • Most of these were in the guano, not from the swabs, which suggested that the droppings could be a major source of viral transmission.
    — Max Kutner, Smithsonian Magazine, 13 Apr. 2020
  • First of all, any GM, coach or scout who believes this guano shouldn’t be running a Pee Wee team.
    — Nick Canepa, San Diego Union-Tribune, 9 Mar. 2024
  • Coaxing a virus that lies dormant in bat guano to grow in a cell culture is difficult, and usually the effort fails.
    — David Quammen, New York Times, 25 July 2023
  • Before long the guano was exhausted, and soil depletion doomed the commercial farms.
    — Henry Wismayer, Travel + Leisure, 7 Jan. 2026
  • Seabirds, for example, nest on an island, forage in the water, and then come back on the land, where their guano fertilizes plants.
    — Devi Lockwood, Wired, 21 Sep. 2021
  • The gunpowder was probably used to blast passages for guano extraction.
    — Henry Wismayer, Travel + Leisure, 7 Jan. 2026
  • The night roost is a place for the bats to huddle together for warmth and to deposit their guano, which helps prevent predators from tracking them to their day roost.
    — Joan Morris, The Mercury News, 11 Sep. 2019
  • The crew's nightly flight in search of food, once an awe-inspiring festival of guano and flapping wings, was just a skeleton of its former self.
    — Craig Hlavaty, Houston Chronicle, 17 Apr. 2018
  • The penguins’ guano–aka bird poop–showed up on satellite imagery as a series of dark smudges and allowed researchers to zero in on these new breeding sites.
    — Laura Baisas, Popular Science, 25 Jan. 2024

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'guano.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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