"They're very black and white with their emotions, you know they're either very happy, like Zena is here, or they're grumpy. You know either way.
"Zena has her favourites and her not quite so favourites, so she definitely has friends and not friends in keepers," Seaman explained.
Heading out of winter and into spring, Kelly Tarlton's is preparing for the Gentoo breeding season.
The keepers will start to get the nests out when the breeding kicks off towards the end of next week and will hopefully "have a few babies a bit later".
The day of friendship as the United Nations refers to it is about confronting some of the world's many challenges with friendship.
The UN focuses the day about emphasising that young people participate in community activities to promote an international understanding and respect for diversity.