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BQ 3A News > Blog > UK > Hedgehog poo may grasp vital secrets and techniques about native biodiversity
UK

Hedgehog poo may grasp vital secrets and techniques about native biodiversity

June 9, 2025
Hedgehog poo may grasp vital secrets and techniques about native biodiversity
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Biodiversity, the wealthy number of existence discovered on Earth, is vanishing. I’m a conservation scientist willing to observe this loss to higher perceive the place efforts to opposite it’s going to be best. And I would possibly have hit on a singular resolution.

I learn about Eu hedgehogs, the preferred spiky mammals that inhabit our gardens. Hedgehog populations are declining vastly, with an estimated lack of as much as 75% within the rural spaces of the United Kingdom right through the previous 25 years.

Due to insights won in my analysis, I, Dr Hedgehog, consider that this species may well be useful for mapping wider biodiversity. Extra in particular, its poo.

One possible explanation for the decline in hedgehogs is a decline in bugs, which shape a big a part of their vitamin. All over my many nights of radio-tracking hedgehogs, I got here up with the speculation of analysing environmental DNA (eDNA) contained in samples of hedgehog poo to find what the hedgehogs are consuming and thru that, what’s dwelling in the neighborhood.

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The eDNA manner may disclose genetic lines of all organisms provide within the samples in one research. And, as we’ll see, those prickly mammals have a shockingly liberal vitamin.

Because of the lack of herbal habitats, hedgehogs are an increasing number of dwelling in gardens, and that is the place the fight to avoid wasting the hedgehog will happen. My analysis confirmed that Eu hedgehogs in residential spaces usually talk over with ten to fourteen gardens an evening.

Right here, they devour a big selection of prey, essentially bugs, snails, slugs and worms, but in addition birds’ eggs (from ground-nesting birds – they don’t climb timber). They’re scavengers too, and can munch on all forms of useless animals.

What the general public don’t realise is that those lovable little creatures also are ferocious predators. If they may be able to get their paws (or possibly extra appropriately, their jaws) on reside prey, they’re going to devour chicks that experience fallen out of nests or amphibians equivalent to salamanders, newts and frogs. They’re very good swimmers and every so often catch fish in lawn ponds.

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I’ve observed hedgehogs taking up grownup pigeons or full-sized chickens, and profitable. Hedgehogs additionally every so often bite at the faeces of foxes and lick the saliva onto their spines, more than likely with the aim of overlaying their smell towards predators.

A hedgehog by water.

Prickly, however now not choosy.
Nojafoto/Shutterstock

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We don’t seem to be positive whether or not hedgehogs devour fruit and vegetation deliberately, or if they’re in fact after the worms or bugs dwelling on them – hedgehogs are formally labeled as “insectivores” – however crops presentations up within the stomachs of useless hedgehogs too. The DNA from vegetation ingested via the bugs, worms and snails eaten via hedgehogs, may also display up in an research of hedgehog poo.

When it comes to a information to native biodiversity, hedgehogs are the total bundle.

Hedgehogs reside and forage in a small space. They poop so much, and their faeces are simple to recognise and acquire. If we stay the hedgehog inhabitants going, we gained’t run out of pattern subject material any time quickly.

Prior to DNA research used to be invented, it used to be very tricky to decide the vitamin of a hedgehog, as a result of a slug is decreased to not anything after a go back and forth thru its digestive tract, and it’s onerous to spot a species from a chewed-off beetle leg. Against this, it simplest takes a tiny fragment of a species to turn up in an eDNA research of hedgehog faeces, so believe what shall we uncover.

In those occasions of drastic biodiversity loss, we wish to determine excellent and dependable strategies for tracking biodiversity. An research of a hedgehog poo may even disclose elusive species which will have been labeled as extinct within the space.

My thought of biodiversity tracking thru hedgehog poo has spawned ridicule and a large number of rejection letters for investment programs. I refused to let it prevent me. So I’ve created a crowdfunding marketing campaign the place you’ll be able to fortify the analysis via buying a hedgehog poo and getting a certificates. I’ve 800 hedgehog faecal samples gathered from everywhere Denmark, England and Scotland, saved in a freezer able to be analysed.

The paintings has begun, and my colleagues and I’ve discovered some very fascinating effects already. One is the outstanding shortage of fowl DNA in hedgehog faecal samples gathered from islands, the place hedgehogs are accused of posing a risk to ground-nesting birds via consuming their eggs. We’re assured that our manner works as we examined it previously via feeding quail eggs to hedgehogs, and located numerous fowl DNA within the samples.

When I’ve controlled to boost the remainder finances, we will be able to proceed the investigation.

That is the tale of ways I came upon that hedgehog droppings are gold. If you need to grasp extra, watch my communicate at the matter right here.

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To ensure that Lodge Debt Lodge: Ochsenknecht: “Spook still has no end”
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People and animals can each assume logically − however trying out what sort of good judgment they’re the use of is hard
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