Where all other penguin species lay two eggs, the emperor penguin female lays only one, measuring 11.1 to 12.7 cm long and weighing 345 to 515g - that’s about the weight of 13 Cadbury’s Crème Eggs!

In this clip from the BBC Select documentary Penguins: Spy in the Huddle, we see an emperor penguin meet his chick for the first time - and we learn about the special relationship between father ...