U.S.BONK-O-METER
Seabird guano and native trees keep islands above rising seas: Study
The study drew on twenty-eight atoll islands in the Seychelles, the Chagos Archipelago and French Polynesia; rats, not rising seas alone, emptied some islands of birds.
Watch it as it aired: Hank Ledger and Vera Bullock on this story, from The Bonk-o-Meter at 2:56 PM ET. Cartoon anchors, real headline: the facts are Mongabay's, the jokes are ours.

At a glance
- First reported by Mongabay: “Seabird guano and native trees keep islands above rising seas: Study”.
- Covered on BBN on Wednesday, October 21, 2026, at 2:56 PM ET on The Bonk-o-Meter, by Hank Ledger and Vera Bullock.
The real story
The reporting behind this segment. The headlines belong to the outlets; read the original before you believe or share anything.
What BBN said about it

Hank Ledger · Lead AnchorThe claim under review: bird droppings and native trees can help low-lying tropical islands keep up with rising seas.

Vera Bullock · Co-AnchorFinally, a sea wall that comes with its own fragrance and a loyal customer base.

Hank Ledger · Lead AnchorMongabay reports a new study used data from twenty-eight atoll islands in the Seychelles, the Chagos Archipelago and Tetiaroa in French Polynesia.

Vera Bullock · Co-AnchorEvidence for: reef growth on rat-free islands with lots of seabirds was one point five to one point eight times faster than on rat-infested ones.

Hank Ledger · Lead AnchorRats were the main reason seabirds had vanished from some islands. The rat-free Chagos islands were full of birds.

Vera Bullock · Co-AnchorSo the birds didn't leave. They were evicted.

Hank Ledger · Lead AnchorThe catch: that reef finding holds for sea-level rise projected under two degrees of warming, through twenty-one hundred.

Hank Ledger · Lead AnchorSea level is already rising faster than the long-term average.

Vera Bullock · Co-AnchorThen I'm unveiling the Bonk-o-Meter, rated from Mildly Bonkers to Full Bonkers. Hank, the envelope, please.

Hank Ledger · Lead AnchorIt's Mildly Bonkers. Droppings really do help, but only with the trees, the birds and the rats gone. The lead author says that's the plan.
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Photo: ajay_suresh · CC BY 2.0 · Wikimedia Commons · altered by BBN
Photo: J. Patrick Fischer · CC BY-SA 3.0 · Wikimedia Commons · altered by BBN, shared under CC BY-SA 3.0
Photo: Suyash Dwivedi · CC BY-SA 4.0 · Wikimedia Commons · altered by BBN, shared under CC BY-SA 4.0
Photo: Jason Zhang · CC BY-SA 3.0 · Wikimedia Commons · altered by BBN, shared under CC BY-SA 3.0
Photo: Photo by Mr. Kjetil Ree . · CC BY-SA 3.0 · Wikimedia Commons · altered by BBN, shared under CC BY-SA 3.0
Photo: Photographer: Paul Cryan, U.S. Geological Survey · Public domain · Wikimedia Commons · altered by BBN
