My 3 chooks are 25 weeks old and should be starting to lay soon. we have had them since they were 14 weeks old. There is one each of Black Australorp, White Leghorn and a Rhode Island Red. My question is, how do you teach them to lay the eggs in a laying bax or do they do this instictively? Other chooks I have had have been older and laying when I got them and they just went straight into the laying box.