Onagers are the world's rarest horse species, with only 600 remaining in the wild. But now, three of Chester Zoo's onagers are pregnant at the same time. But when six-year-old mum Romy's newborn foal takes a turn for the worse, the keepers are concerned. Flamingo chick Marley has a tough childhood ahead of him. Male and female flamingos normally share parenting duties equally but Marley's mum, Calypso, has lost interest in mothering duties, so his dad, Rum, will have to do the work of two parents if Marley is to survive. Meanwhile, Sulawesi macaque monkey Rumple gives birth to a baby girl called Rey. However, Rey is the only baby in Chester's 19-strong troop and she gets picked on by some of the higher-ranking females. Rumple needs help if she's going to ward off the other females' excessive interest in her newborn.