THE ANIMAL FILES

Common ostrich

Struthio camelus

A lowered neck is not a head buried in sand.

The common ostrich is familiar as a large ground-running bird, yet some of its best-known stories confuse observation with explanation. A low head can be part of feeding or a flattened posture. Pebbles in the digestive system and a mostly plant-based menu offer more concrete clues to how the animal lives.[1]

Follow the evidence ↓
Common ostrich
Image: Lip Kee from Singapore, Republic of Singapore · Commons · CC BY-SA 2.0
Frequent foods
Seeds, grasses, fruit and other plants[1]
Food processing
Gastroliths help grind food in the gizzard[1]
Activity
Mostly active by day[1]

A running bird can also lie low

Ostriches are mainly active in daylight and may occur alone, in pairs or in groups depending on the setting and season. When lying low, the head and neck can be held along the ground.[1]

The grinding happens inside

Ostriches lack teeth and swallow small stones that act as grinding material in the gizzard. Food is moved down the long neck before reaching this muscular processing area.[1]

Plant feeding does not require a perfectly exclusive diet

Seeds, grasses, shrubs, fruit and flowers form much of the menu, but insects and other animal material are also recorded. The useful description is mostly plant-based feeding rather than a claim that every meal must be vegetation.[1]

A COMMON MIX-UP

Do ostriches hide from danger by burying their heads?

No. The familiar story is a misconception. Lowered feeding or resting postures can be mistaken from a distance, but a plausible explanation of how the myth arose is not evidence that the bird actually hides its head underground.[1]

TRY A LITTLE REASONING

Why distinguish a swallowed pebble from a food item?

Reveal the explanation

The pebble can serve a mechanical role in the gizzard, helping process other material. What enters an animal’s mouth is not always consumed for its nutrients; some swallowed objects help the digestive system perform a task.[1]

Sources & editorial notes

Adapted and translated from the cited Wikipedia revisions, with source-linked reasoning. Image credit and licence are listed separately above.

Adapted and translated from Wikipedia contributors; exact revisions are linked below. CC BY-SA 4.0

  1. Wikipedia contributors — Common ostrich (fixed revision; adapted and translated)
  2. NCBI Taxonomy — Struthio camelus (identity and classification)

Last fact check:

One discovery leads to another

Southern cassowaryA forest-floor fruit eater with a father on nest duty.Casuarius casuarius ↗EmuFlightless does not mean without useful feathers.Dromaius novaehollandiae ↗Okarito kiwiA familiar-looking kiwi population turned out to need its own species name.Apteryx rowi ↗