Eagle makes history as it flies from the top of the world's tallest building, the Burj Khalifa tower

Darshan became the first bird to fly from the top of the world's tallest building

What does a hen do with her unfertilised eggs?

A hen does not know if her eggs are fertilised or not. In fact (much like a human) a rooster can be infertile, so a hen's eggs might not be fertilised even if she is in a flock with a rooster.

A Small Blue, which is one of the rarest butterflies in the UK

Conservationist saves 550 rare caterpillars of the Small Blue butterfly from redevelopment site

Amanda Hunter saved each creature by hand

Each cubic metre of garden in Britain could currently contain up to 200 slugs

British gardeners braced for invasion of slugs and snails

Experts blame a mild British winter

Lynx are to be reintroduced into the wild in Britain after a 1,300-year absence, under an ambitious 'rewilding' plan drawn up by a conservation charity

Lynx to be reintroduced into wild in Britain after a 1,300-year absence

The predators eat deer, rabbits and hares among other animals but are not considered a risk to people

Do crustaceans feel pain when we boil them?

The short answer is: we don't know. To make matters worse, it might not even be an answerable question. The long answer is as follows:

China's ivory ban branded 'a flimsy measure that won't work'

Campaigners say rules don’t do enough to combat illegal trade

Malaysan pangolin (Manis javanica)

Pangolins: What are they, why are they so endangered and what can we do to help?

These incredible creatures are completely unique but could be lost forever

Prince William's tour of China to promote animal rights ends in embarrassment

The Duke of Cambridge was unaware that the apparently wild animals had been trained to perform tricks for tourists

Woodpecker and weasel: This is what the photographer has to say about the incredible picture

‘The woodpecker left with its life, the weasel disappeared hungry’

Panda cubs born in captivity in 2012 at the Chengdu Panda Base in China

China's wild panda numbers have increased by 17% since 2003, new census reveals

But their habitat is still under threat from fragmentation, caused by physical barriers such as roads

Attenborough with the primates

Gorillas nearly missed: BBC producers didn't want to broadcast Sir David Attenborough's famed Rwandan encounter

Producers thought it was too trivial for the landmark series Life on Earth, dismissing it as 'Johnny Morris stuff'

Appeal to save endagered lemurs is falling on deaf ears, say campaigners

About 90% of all lemur species are at risk of extinction on their native island of Madagascar

Why are moths fatally attracted to light?

To understand this phenomenon, you need to know about phototaxis. Phototaxis is an organism's automatic movement toward or away from light. Cockroaches are an example of a negatively phototactic organism. You've probably noticed how they scurry back into dark corners and crevices when you illuminate their late-night snacking party in your kitchen.

A ban on ivory imports has been introduced in Beijing with immediate effect

China's year-long ban on ivory imports 'only window dressing'

Some wildlife campaigners welcomed the measure but remain concerned that it falls short of addressing the root problem

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