479-Wildlife Gardening for Everyone and Everything, with Kate Bradbury

Joe Lamp'l opened this episode frustrated about a finalized federal rule from the U.S. Departments of Interior and Commerce that strips habitat destruction out of the definition of "harm" under the Endangered Species Act. Under the old definition, destroying critical habitat counted as harming a species. Now it doesn't, which clears the legal path for logging, mining, drilling, and development in areas that declining species depend on. Lamp'l called it non-partisan; UK wildlife gardening author Kate Bradbury, his guest, said it lands at exactly the wrong moment, when habitat restoration should be the priority.

From there the episode becomes a practical wildlife gardening conversation, and Bradbury has done the reading.

What Bradbury updated, and why

Bradbury revised her book because new science changed some of the standard advice. Mealworms, long recommended as a hedgehog supplement, cause metabolic bone disease and lead to broken bones. The Royal Horticultural Society has since updated its bird-feeding guidance accordingly. She also added chapters on fungi, climate change, and citizen biodiversity recording. (The mealworm finding applies to European hedgehogs in the UK; it doesn't carry over to US gardens.)

On bird feeders, she made a harder call

Bradbury stopped using them. Her reasons: disease risk, uncertainty about pesticide residues in commercial bird food, and evidence that feeders benefit already-common species while doing nothing for the ones actually declining. She cited UK monitoring data showing blue tits and great tits up roughly 96% and great spotted woodpeckers up nearly 400%, while marsh tits and willow tits have declined by 87 to 94%. More woodpeckers means more predation pressure on the declining cavity nesters. She acknowledged some hedging on the exact figures. The direction of the trend is well-supported by UK monitoring; treat the specific percentages as approximate.

Her alternative: grow seed-bearing plants, berry shrubs, and caterpillar food plants. The birds come; the disease and pesticide risk don't.

The aphid story is worth keeping in mind

Bradbury watched an aphid infestation on her cardoons resolve itself without any intervention. Hoverflies laid eggs, lacewing larvae arrived, then ladybirds, then an Ectemnius wasp. The plants flowered normally, and heavy rain cleared the rest. The point isn't that every infestation resolves that way. It's that predators need time to find the prey, and spraying on day three kills the predators before they arrive.

The basics: food, water, shelter, corridors

Bradbury's framework is simple. Pollinators need flowers. A small pond, even a container, provides water and amphibian habitat. Autumn leaf piles support beetles and earthworms. Hedges filter wind and provide nesting and berries. And wildlife corridors matter: hedgehogs travel up to two kilometres a night and fence lines stop them cold. Cutting a 13-to-15-centimetre gap under fence panels lets hedgehogs, frogs, and foxes move between gardens. Rare bee populations in fragmented UK habitat face inbreeding and local extinction when garden stepping stones disappear.

On water: she urged putting out shallow dishes daily during drought. Dog bowls are too deep for young hedgehogs. A four-week-old hedgehog she described lost an eye to dehydration before it was rescued.

One claim to flag

Bradbury said pesticides originated from post-WWII chemical weapons industries looking for new markets, and that they were never necessary. The organophosphate connection to nerve agent chemistry is real, and some historians have made that industrial-redirect argument. But the claim that pesticides were never needed strips out a large body of agricultural science and the genuine crop-loss problems that drove their adoption. It's a pointed opinion. Take it as such.

If you garden

iNaturalist is a free app that lets you log wildlife sightings directly into databases scientists use to track species distribution. If you already notice what visits your yard, this costs nothing and the data goes somewhere useful.

This episode doesn't touch money, Medicare, Social Security, or elder law. For gardeners who want to do more for local wildlife, there's real, low-cost, actionable material here.

Host Joe Lamp'l and UK wildlife gardening author Kate Bradbury discuss practical steps anyone can take — from a small balcony to a suburban yard — to create habitat for birds, insects, amphibians, and other wildlife. The episode opens with frustration over a recent U.S. regulatory rollback weakening the Endangered Species Act, then pivots to concrete, actionable wildlife gardening ideas. There is genuine substance here for anyone who gardens and wants to do more for local wildlife, but nothing that touches money, Medicare, Social Security, or elder law.

What was covered

• The regulatory change that prompted the opening segment: Joe Lamp'l described a finalized rule by the U.S. Departments of Interior and Commerce that redefines "harm" under the Endangered Species Act to mean only direct physical harm to an animal, removing habitat destruction from the definition. Lamp'l framed this as devastating and non-partisan; Kate Bradbury agreed it comes at exactly the wrong time, when habitat restoration should be the priority.
• Why Kate Bradbury updated her book: Bradbury explained that new science drove the revision — notably that mealworms cause metabolic bone disease in UK hedgehogs, and that the Royal Horticultural Society (RHS) has since updated its bird-feeding guidance in a way her first edition couldn't capture. She also added chapters on fungi, climate change, and citizen biodiversity recording.
• Wildlife gardening principles — food, water, shelter, corridors: Bradbury walked through the basics: grow flowers for pollinators, add a pond (even a small one), create hedges that filter wind and provide nesting and berries, pile autumn leaves for beetle and earthworm habitat, and avoid pesticides so predator-prey cycles can self-regulate.
• Wildlife corridors and stepping-stone habitats: Bradbury used the example of hedgehogs traveling up to two kilometres a night, blocked by garden fences. She recommended cutting 13–15 cm holes under fences to let hedgehogs, frogs, and foxes pass. She also described how rare bee populations in fragmented UK habitats face inbreeding and local extinction without garden stepping stones linking them.
• Why Bradbury stopped using bird feeders: She cited disease risk, uncertainty about whether commercial bird food is pesticide-free, and the concern that feeders disproportionately benefit already-common species (blue tits and great tits, up roughly 96%; great spotted woodpeckers, up nearly 400%) at the expense of declining marsh tits and willow tits (down 87–94%). Instead she grows seed-bearing plants, berry shrubs, and caterpillar food plants.
• Pesticide patience — a practical story: Bradbury described watching an aphid infestation on her cardoons resolve itself through a sequence of hoverfly egg-laying, lacewing larvae, ladybirds, and an Ectemnius wasp — all without intervention. The plants flowered normally; heavy rain cleared the remaining aphids.
• Hedgehog water in drought: Bradbury urged listeners to put out shallow water dishes daily — dog bowls are too deep for young hedgehogs — and described a dehydrated four-week-old hedgehog that lost an eye before being rescued as a concrete example of the stakes.

Notable claims & predictions

• Kate Bradbury on mealworms and hedgehogs: "Mealworms have proven to be quite bad for them. They cause metabolic bone disease, which basically makes them break their bones." (Applies to UK hedgehog feeding advice; US readers don't have wild European hedgehogs.)
• Kate Bradbury on bird feeder trade-offs: Marsh tits and willow tits have declined by roughly 87–94% in the UK while blue tits and great tits have increased by roughly 96% over the same period — and great spotted woodpeckers have increased by nearly 400%, adding predation pressure on the declining species.
• Kate Bradbury on pesticide origins: "After the Second World War, the reason we've got these pesticides is because the businesses who made the bombs wanted somewhere for the chemicals to go." She said she does not believe pesticides were ever necessary and that they are now degrading soil fertility and reducing harvests.
• Kate Bradbury on rewilding: "Rewilding isn't about gardening less. It's about working with nature, not against it." She defined it as mimicking ancient animal land-management patterns rather than simply leaving everything alone.
• Joe Lamp'l on the ESA rule change: The Departments of Interior and Commerce finalized a rule removing habitat destruction from the regulatory definition of harm under the Endangered Species Act, opening vulnerable habitats to logging, mining, drilling, farming, and real estate development.

Fact check

Bradbury's claim that pesticides originated from post-WWII chemical weapons industries looking for new markets — contested / oversimplified. The organophosphate family of insecticides does share chemistry with nerve agents developed in the 1930s–40s, and some historians note that postwar industrial capacity was redirected to agriculture. However, the blanket assertion that pesticides were never needed and that the entire industry was "a ruse" to monetize weapons chemistry strips away a large body of agricultural science and the genuine crop-loss problems that drove pesticide adoption. The claim is a pointed opinion, not a verifiable fact — treat it accordingly.

Bradbury's bird population figures (great tit/blue tit up ~96%, marsh tit/willow tit down 87–94%, great spotted woodpecker up ~400%) — plausible directionally but unverified in detail here. UK long-term bird monitoring does show declines in marsh and willow tits and increases in great spotted woodpeckers. The specific percentages Bradbury cites cannot be confirmed from this transcript alone, and she herself hedged ("might be the other way around" on the two declining species). Take the direction as well-supported; treat the exact figures as approximate.

Lamp'l's description of the ESA regulatory change — accurate in broad outline as of the recording date. The Biden-era "harm" definition that included habitat modification was indeed rolled back. The practical consequences Lamp'l described (opening habitats to industrial activity) are a reasonable reading of what removing habitat destruction from the harm definition would mean, though the full legal and regulatory picture is more complex than a short podcast segment can convey.

No claims rise to the level of clearly false.

Why this matters for you

• For gardeners of any plot size: Bradbury's core message is that even a pot of Mediterranean herbs on a balcony or a shallow water dish in a backyard contributes to a wildlife corridor. If you garden, there is something specific and low-cost here to try — stopping or reducing bird feeders in favor of seed-bearing plants, adding a shallow water source, or cutting a small gap under a fence.
• On pesticide patience: The cardoon story is a usable reminder for anyone tempted to spray at the first sign of aphids — predators need time to arrive. This applies to US gardens as much as UK ones.
• On citizen science: Bradbury recommended iNaturalist (free app) as a way to submit wildlife sightings that go directly to scientists tracking species distribution and decline. If you already notice what visits your garden, this is a low-effort way to make that observation count.
• Practical impact on money, health, or family decisions: Minimal and indirect. This episode is about wildlife gardening practice and environmental policy. It is interesting and motivating for gardeners, but there is nothing here to act on this week in the domains of retirement income, Medicare, taxes, or elder care.