jack: we're in tanzania's lake manyara national park. t: they're very social animals. they like to stay in family groups like this. they're grooming, they're removing fleas, but it's also a way of being social because they're very social animals and to keep a social structure. jack: i mean, it's almost like a bunch of families going hiking or camping or something. robert: very similar to a human structure. it's very organized. jack: look at them. that's brand new. robert: brand new baby. jack: that's amazing. little jack: how old do you think the baby is? robert: i think a day or two at most. jack: look at this one nursing here, jack. it's nursing off the breast. robert: oh! look at that. jack: let that thing finish. little jack: it's just hanging. jack: nurse upside down. this is the best view i've ever had of baboons, but we knew there was more to see at the lake, so we decided to keep moving. as we arrived at the edge of the lake, we saw a huge flock of pelicans. robert: the interesting fact is that the flamingos and the pelicans alter