Biggest amount of change is that always can be in time because it's an immense task. We've got a lot of animals, a lot of different species here. But as well as that we've got a lot of mixed species exhibits as well and we've got animals like squirrel monkeys that all interact together.
And weighing one of them is very very difficult cuz you end up weighing five of them at the same time.
>> We've got Max the Eurasian Eagle owl, he's 23 and he weighs 2.2 kilograms.