May I have your attention please you can now book your train tickets on Uber and get

10% back in credits to spend on your next Uber ride so you don't have to walk home in the rain again.

Trains now on Uber. T's and C's apply. Check the Uber app.

This is

is Scientific Americans 60 Second Science. I'm Jason Goldman.

Robin Hood famously stole from the rich and gave to the poor.

Young newly hatched barn owls do something similar.

On average, barn owls raise six chicks at once,

and sometimes as many as nine but they don't all hatch at the same time

which means the older owlets are generally larger and healthier than their younger

brothers and sisters.

As long as the little owls remain in the nest, they're completely dependent on their parents

for food.

The problem is that the small rodents they eat can't be split up.

So when mom or dad returns to the nest to feed their offspring,

only one chick can eat at a time.

In many bird species, the oldest would simply outcompete the youngest.

But barn owls are different.

Turns out the older healthier birds sometimes donate their meals to their

hungrier siblings. Adults in other animal species share their food.

It's mainly observed when males want to reproduce with females, so there is many

exchange of food. in primate there is many exchange

...