This viewing area really upset me when I visited. Were they trying to make an "African theme" with those wooden logs? Who knows what they were smoking when they made this...
Seams to me if they want to give the Duikers some privacy they could start by letting the grass grow.
Were they a new exhibit hence the need to fence them off?
Looks like a wildlife blind to me. I think the zoo has another blind over by its antelope exhibit too. And from what I understand, this isn't the only viewing area into the duiker pen.