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These people listened 123 different birdsongs then ranked their attractiveness. Here's what came top (and bottom)
Songs that were complex, high-pitched and relatively quiet ranked highest, while shrill, loud songs fared the worst.
‘Lost’ animal caught in fishing net in Papua New Guinea. It hasn't been seen by scientists for more than 40 years
Missing from scientific records for four decades, the spinach pipefish has been 'rediscovered' thanks to local communities – who knew of its whereabouts all along.
“I screamed before the rest of it came into the screen.” Deep-sea scientists film rare creature deep in Pacific Ocean
The elusive animal was filmed swimming near an underwater mountain off the coast of California
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In 1941, a massive WWII ship sank off the coast of Albania. Divers just went down there – and found a rare mammal living among the wreck
This 135m-long wartime shipwreck has become an artificial reef, home to groupers, wrasse, lionfish and critically endangered Mediterranean monk seals.
See the chilling moment this vampire squid turns itself inside out
As if this body inversion manoeuvre wasn't surreal enough, the ‘vampire squid from hell’ also exudes a cloak of bioluminescent mucous from its crimson body to help deter predators.
"Even amongst their fellow apex predators, they are still top of the food chain…" 7 animals so formidable they have virtually no predators
While most animals that have no predators are what we call ‘apex predators’, meaning they are right at the top of the food chain, this is not always the case.
"Dark fluid from his temporal glands stains the sides of his face, and other males often give him a wide berth. And for very good reason."
What happens when a bull elephant is in musth and why does it happen?
"It’s simply the safest, fastest and most direct way to get from one part of its territory to another." The animal that's using Chicago's subway like a local
Coyotes have expertly integrated themselves into Chicago life, and are making use of the infrastructure
When complete darkness fell on Antarctica, researchers used satellites to spy on one of its most secretive animals
Tracking the movements of emperor penguins is vital for conservation efforts, say scientists
It’s one of the driest places on Earth. Now images from space show “rarely seen” snowfall in the Chilean desert
Scientists attribute the unusually wet winter in Chile to the strengthening El Niño.
"It produced a 12km high eruption plume, a large volume of floating pumice, and an island almost a mile-wide with cliffs 30-50m high"
The first recorded eruption of Home Reef, Tonga, was in the mid-19th century and it has had several periods of eruptions in the years since.
Is this the world's most gruesome – and unluckiest – death ever? Ancient human attacked by two deadly predators at the same time
As far as gruesome, prehistoric deaths go, none are worse than the death experienced by a Homo habilis known as OH 7.
"He fed them first from a stick and then from his mouth…" In this Ethiopian city, people feed one of Africa’s deadliest predators mouth-to-mouth
As darkness falls across Harar,
people gather to welcome the
city’s carnivorous visitors and
see them get their fill.
Divers hid a camera in a lobster den. What happened next shocked them all
Scientists in Australia were surprised to see Port Jackson and crested horn sharks appear out of the darkness.
Could this endearing mammal be the reason Canada exists?
How are beavers responsible for the exploration of Canada? Christian Dunn explains
People started building artificial beaver dams in California. Now something "mind blowing" is happening
Following the construction of the dams, one river saw juvenile coho salmon survival rates soar from 8% to 60%.
How old are polar bears? Just when did these fearsome Arctic giants first appear?
Scientists dosed aggressive fish with hallucinogenic drugs – and discovered something interesting
The psychoactive compound in ‘magic mushrooms’ may reduce aggressive behaviour in a species of fish
It’s the size of Texas, stores 70 billion tonnes of carbon and deadly predators roam its harsh, remote landscape
The West Siberian Lowland is the world’s largest high-latitude wetland and contains the biggest peatland
“Torture. You are chained in the flow of an active volcano.” This painful stinging creature makes bizarre nests and defends them by drumming
The warrior wasp has a unique way of defending its nest – before delivering one of the most excruciating stings on the planet
Google wants to release millions of mosquitoes across the US. Here’s why
Google’s parent company, Alphabet, has applied for a permit from the US Environmental Protection Agency
‘Ghost’ green mamba rediscovered after 90 years
Snake experts try to solve a 150-year-old mystery thanks to surprise discovery.
Coyote finds vulture nest in Texas. What it does next has never been caught on camera before
A remote camera in Armstrong County has captured the first direct visual evidence of coyote predation on turkey vultures.
We thought Britain only had one venomous snake. These scientists think they've found another
Britain’s rarest reptile, the smooth snake, to be reclassified as a potentially venomous species – but it represents absolutely no threat to humans, say researchers.
