Last year Mr Mayer walked 621 miles (1,000km), also with Zarafa, through France to recreate the journey of a real giraffe which trekked the route in the 1800s. Mr Mayer told BBC Radio Humberside ...

A conservation group said rangers could monitor the lone male giraffe's movements in real time. The giraffe has a rare genetic condition called leucism, which causes the loss of skin pigmentation.