I have read in this Forum that the best way to cure this habit is as follows: 'Take them out of the nest and put into a cage. No bedding or nest material. Give them feed, water, oyster shell and grit.' It really works and I am grateful for the advice however, can anyone provide a rational and humane reason why it works as I am having problems here in France explaining it to others. Many say it is cruel and that they are denied freedom and I have no answer.