Malleefowl
Weirdness 9/10

The bird that never sits on its eggs and runs a compost oven instead

This bird never sits on its eggs. It builds a giant compost heap and runs it like an oven.

📋 Fact File
🐾 Bird🍽️ Omnivore (seeds, buds, flowers and small insects)
📏 Size
About 60 cm (24 in) long and up to 2.5 kg (5.5 lb)
About the size of a plump farm chicken
Lifespan
Up to about 15 years or more
🟡 VulnerableFoxes, feral cats and habitat loss have cut its Australian range in half over the last century.
🤔 Guess first

Which one is REALLY true about the Malleefowl?

The short version

The malleefowl digs a pit, packs it with leaves, waits for rain and buries it in sand. The rotting vegetation generates heat and the eggs are laid deep inside. For up to nine months the male opens and closes the sand to hold the mound near 33 degrees, testing it with his beak. Chicks dig out alone and can fly within a day.

Why it's so weird

  • The Malleefowl never sits on its eggs, and builds a giant compost heap to hatch them instead.
  • The Malleefowl digs a wide pit, packs it with leaves and sticks, waits for rain to soak them, then buries the lot under sand.
  • The Malleefowl lets the rotting vegetation inside the mound generate the heat that incubates the buried eggs.
  • The Malleefowl checks the temperature by pushing its beak down into the sand, like a living thermometer.
  • The Malleefowl hatches chicks that dig themselves out alone, run within an hour and fly within a day.
📏 How big is it, really?
Malleefowl
60 cm
Malleefowl
a 7-year-old
1.2 m
🧒

You could line up about 2 of them along a 7-year-old!