The aviary next to flamingos will be built for pelicans. The zoo wants them to build nests up in trees so it should be pretty high (and there will be other bird species mixed in). Visitors will see it from the same covered walk-through viewing corridor like flamingos, without net between them and birds. BTW, at the map, you can also see the existing two-storey off-show bird breeding house (end of road behind pengins). This house will stay closed for visitors, but in future, a row of bird aviaries will be built around it and those will be visible.