Will the birds one day lose their fear of man?

The problem is that we don't know when your bird lost its ability to fly.

Many birds lose the power of flight - for there are no large predators to make it worthwhile.

But the scientists have found that when bold birds lose, they are slow to recover.

"As you move south and west from there, the birds very quickly lose the white ring."

Twenty common birds have lost more than half their populations in 40 years.

All these birds have lost the power of flight over millions of years.

Instead, these birds lose all their flight feathers at once.

"The birds are losing weight, maybe from intestinal disease and a variety of other causes."

After the kidnapping, the bird lost weight and was still having difficulty breathing, she said.