An African penguin shields her chick with her wing at the Stony Point colony. Due to the plethora of convergent threats posed by the modern world, barely one in three chicks survives to adulthood. In the last century, most penguins nested in deep burrows dug out of guano, but since the guano was stripped away by humans for fertiliser, the birds have had to nest in more exposed locations, making them more vulnerable to predation and climate extremes.
