Black Nexus found Red Campsite Body and Soul 2016

Hi I found a black nexus phone on the ground in the red campsite of body and soul, I think it was on Saturday. It's still working as far as I know but has no batery. When I tried to turn it on it was on for about 5 seconds, I think the background was a picutre of 2 girls but can't be sure. It has a black cover on the back. I'll try and find a charger to charge it and get it back to its owner!