An owl boarded a helicopter fighting wildfires in California.

An owl

An owl

Dan Alpiner was conducting water drops over the state for aircraft charter company Sky Aviation when he discovered the bird calmly perched on the chopper.

The company posted on Facebook: "It's odd to have an owl enter an aircraft.

"It's unheard of to have it enter while the helicopter is in-flight. It's an unexplainable and magical miracle for it to stay with you for several water drops, then leave just as it arrived - safe and unannounced."

Alpiner was concerned that the owl could fly dangerously around the cockpit, but it travellled calmly with him for several minutes before flying off.