Incredible images showing a fearless crow landing on the back of a bald eagle have been captured by an amateur photographer in Washington state.
Phoo Chan took the pictures in Seabeck, Washington, as he was photographing the bald eagle hunting.
He said that all of a sudden, the crow approached the eagle from behind, landed on its back, surfed for a few seconds then took off again.
"It was as if it was taking a short break and at the same time a free ride," he told the MailOnline. "What's more surprising was the eagle didn't seem to mind and kept flying as if nothing happened.
I think the crow decided to land on the eagle because the eagle did not respond to its harassment so it landed briefly and then left.
"Eventually the crow flew away and the eagle continued to hunt for its breakfast. They both flew in different directions and it looked like they became friends."
The bald eagle - the symbol of the United States - is one of North America's most powerful raptors with a typical wingspan is between 1.8 and 2.3 m (5.9 and 7.5 ft) and powerful talons and giant yellow beak. It preys on large fish, small mammals and a range of fellow birds.