The Guardian89%
‘I have an understanding housemate’: the student who makes videos of fungus on faeces 22%
By Patrick Greenfield20%
8/2/2026, 1:00:15 AM
BS Summary: This article contains 20 faulty reasoning types, including Anecdotal, Biased Writer Voice, and Bandwagon, with Overconfidence Bias as the most egregious example at 15.7% saturation with 67 hits. Analysis detected 581 faulty-reasoning hits from 428 analyzed words, generating a BS Score of 31.1% and a BS Rank of 22% (19,859 of 25,473 articles). This article is better (less manipulative) than 78.00% of the article peer group.
Alfred Drummond-Herdman is possibly the only person in the UK who is sent animal faeces in the post out of goodwill.
His bedroom in Edinburgh is full of the stuff: clothes have been removed from his wardrobe and cupboards, replaced with terrariums and plastic containers housing sections of cowpats, grouse droppings and rabbit pellets.
“I have a very understanding housemate,” he says.
But what emerges from the containers has made the 27-year-old trainee lawyer a natural history sensation on social media: brightly coloured contortions of fungi, photographed every 30 seconds as they develop, to create timelapses that are viewed by millions of people around the world.
Inkcaps, fieldcaps and ascobolus, which look a bit like barnacles, all emerge from the dung he collects, including two new species that he has formally identified – with more on the way.
The extraordinary images are a rare insight into the world that surrounds us all, but few ever get to see.
Drummond-Herdman is a self-taught amateur taxonomist who became fascinated with fungi that grows on dung, known as coprophilous fungi, when walking in the Ochil Hills on the edge of Stirling during the pandemic.
Cowpats from highland cattle, like many other herbivores, are home to thousands of fungi spores, which race to fruit and produce mushrooms from the moment they have been deposited.
“In Scotland one summer, I came across cowpats that had all sorts of mushrooms growing from them.
It was like a forest.
It was so bizarre, you could not miss it.
I went online to identify them, and that was really the beginning of the rabbit hole that I have been going down ever since,” he says.
Via webcam, Drummond-Herdman shows me his microscope station and the containers positioned around his bedroom, explaining that the boxes of dung do not smell because they were produced by herbivores and are mostly undigested plants.
He says that he hopes that his videos inspire a greater appreciation of nature conservation in the UK, particularly fungi.
“I am trying to shout about them in the right way.
The whole point of this is not to name a random species that 10 people read about in a journal.
I want to show that taxonomy is the frontline of biodiversity research.
Researching habitat loss and native species is nothing without it,” he says.
Find more age of extinction coverage here, and follow the biodiversity reporters Rebecca Ratcliffe, Phoebe Weston and Patrick Greenfield in the Guardian app for more nature coverage.
Analysis
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