Odd feeding behaviour: Noisy Miner, Maroubra Sydney

Hi all,

I just saw a Noisy Miner picking at a small piece of polystyrene and eating it (in park at Maroubra Beach, Sydney).

It broke of a small piece and ate it. Did this four times.

Seems very strange to me.

Anyone else witnessed such bizarre behaviour in birds before?

Cheers,
Charles Hunter