The silverback seemed at last to tire of our presence.

The gorilla we had seen was a large male silverback.

Though after our first brief encounter with the silverback it looked, for a while, as if we would not find any more.

Unusually for mammals, the group's social focus is the silverback male.

There is a strong risk that the new male will kill the infants of the dead silverback.

He then embraced his role as silverback and leader of a troop.

A problem with the Bukavu group was that the silverback wouldn't charge.

Females often transfer to a new group several times before they settle down with a certain silverback male.

Then in front of me loomed the back view of a silverback.

A group usually consists of one silverback and a few subdominant males.

Another 10 yards away, the second silverback in the family tore saplings from a tree.

Makara the silverback was clearly having a bad day.

Michael was a silverback gorilla whose parents were killed while he was still a baby.

"It's rare to see an established silverback male get overthrown.

The feeling I had looking at my first silverback gorilla in the wild was vertiginous.

From the picture it looks like an African silverback.'

We witnessed a silverback gently caring for his daughter because her mother had left the group."

Without a silverback to protect them, the infants will likely fall victim to infanticide.

The bond a silverback has with his females forms the core of gorilla social life.

At the time, we thought Makara might have been threatened by a wild silverback wanting to take over his group.

"She's letting the silverback know where we are," Wasse whispers.

If the silverback dies, these males may be able to become dominant or mate with the females.

His squat figure has resulted in the nickname Silverback.

There is a male silverback on the calendar.

"When the silverback's not happy, he hides the others and scatters them up the hill.