delta, biologist zeine el abidine is out on the water a almost evey day takingng a look at the nestg sitetes. zeine: i love these birdrds, they're my favorite animals. they're beautiful,l, and they'e alsoso proof that t the envirot is in good shape. if they're here, then we know there's no environmental damage. and they don't make anything dirty. i love them. reporter: the diawling national park is home to the greatest concentration of birds in west africa. and in addition to rescuing animal habitats in the region, the conservation zone has also helped to secure human livelihoods. host: now it's time to meet the berlin globals -- people from around the world who've made the gegerman capital their home. >> i livin berlin ve years now. ht: they ma berlin e vibrbrant metropolis that it i. we tell their stories, every wednesday on our facebook page, dw global society. today, our berlilin global coms from slovenia. >> don't be alarmed. people know me. i'm the famous pub crawl guy. hey, what's up? i love the t-shirt. pub crawl is basically you making sure that thehe people he a good time when you