The team look at human hobbies and wonder, what is the point?
Gareth goes on a date, purely for research purposes, and roving reporter Phil is back at the Swindon nest to observe his favourite family...from a safe and morally appropriate distance.
To listen to more episodes from this series, search "Humanwatch" on BBC Sounds.
Written and presented by Marjolein Robertson and Gareth Waugh
With Phil Ellis and Katia Kvinge
Additional voice by Kai Humphries
Produced by Lauren Mackay
Sound by Fraser Jackson
Photographer: Chris Quilietti
A BBC Scotland production for Radio 4.