A flock of Sulphur-crested Cockatoos were 'grazing' in a park. The upswept crest is folded and the yellow feathers are hidden away. Pink crested cockatoos are another variation. Voice: raucous screeches and squawks.

My book is getting old and tattered. Not so much from overuse. First written in 1970, Diet for a Small Planet by Frances Moore Lappe is influential and considers vegetarianism, perhaps grain feed beef and sustainability and especially food combinations in a lot of detail.
It takes a degree of bravery to be vegetarian and my interest has waxed and waned even when it is a delicious healthy option.
In the book, one of the recipes has a simple tasty combination of rice, cashews, raisins, sliced apple, carraway seeds and curry in no less than the Song of India Rice.
Otherwise, the aim is to serve some semblance of balanced nutrition. This means more than the exclusion of meat.