It means to ignore something, even when that something could be dangerous to the person in question or to those on whom he/she bears responsibility.
The imagery comes from the (erroneous) belief that ostriches bury their heads in the sand. The idea is that, with one's head under the ground not able to see or hear outside, they aren't aware of what's going on: usually at a time when they SHOULD be aware.
The phrase can be used more forcefully to imply that this ignorance is intentional and that the object of the idiom is making a very poor response to a crisis.
Among the ostrich's proverbial peculiarities are indiscriminate voracity (especially a habit of swallowing iron and stone to aid digestion), want of regard for its eggs, and a tendency to hide its head in the sand when pursued. "Alike (the) Austridge, who hiding her little head, supposeth her great body obscured" [1623] Ostriches do put their heads in the sand, but ostrich farmers say they do this in search of something to eat.
You should stand up and take notice, don't bury your head in the sand like an ostrich.
Flamingos do not actually bury their head in the sand. It is a myth. Some also say that ostrich bury their heads in the sand, but this is also a myth.
No. An emu does not stick its head in the sand. Nor, for that matter, does an ostrich.
Neither ostriches, or flamingos bury their head in the sand.
As numerous as the sand of the seashore. The sands of time. Bury one's head in the sand. A rope of sand. Draw a line in the sand.
People used to believe that an ostrich would bury their head in the sand when scared. It means the person is ignoring what is going on and is not willing to deal with it.
its ostrich........its the native of Australia but also found in Africa The ostrich is a large African flightless bird. It is not native to Australia and it does not ever bury it's head in the sand.
condere vester caput in harena.... said the 7th grade latin student
I gather it means to bury your head in the sand, as ostriches reportedly do when they are frightened and want to go into 'full denial mode'.
no fartheads
you throw dry sand on it
no. Even camels need to breathe, despite their ability to close their nose with flaps.