'Though penguins nest in colonies numbering in the millions, they practice this, from the Greek meaning "one marriage"'
monogamy
A PENGUIN, A YAK & A KANGAROO: Though penguins nest in colonies numbering in the millions, they practice this, from the Greek meaning one marriage
Though penguins nest in colonies numbering in the millions, they practice this, from the Greek meaning "one marriage"
Though penguins nest in colonies numbering in the millions, they practice this, from the Greek meaning "one marriage"
A PENGUIN, A YAK & A KANGAROO
monogamy
A PENGUIN, A YAK & A KANGAROO