A rhea like this one pictured is on the run near a golf course in County Hertfordshire, England.DAVID GILES/afp/getty images
The large flightless bird escaped from a pen at its owners' home in the town of Brent Pelham and has been spotted at the nearby Barkway Park Golf Club.Getty Images/FILE
Rheas are native to South America, can grow up to four feet tall and reach top speeds of 40 miles per hour.AIZAR RALDES/AFP/GETTY IMAGES/FILE
UK Animal welfare charity the RSPCA has warned that rheas, which have sharp claws and beaks, can be dangerous if they feel threatened.TIMM SCHAMBERGER/Getty Images/DPP/FILE
Golfers at Barkway Park don't seem too concerned, however, and have been taking pictures and videos of the bird when it appears on the greens and fairways.MIGUEL ROJO/AFP/GETTY IMAGES/FILE