My oldest daughter will be in the eighth grade next year and we are casting about for science fair projects for her. She did a poultry related project for this year's fair that took third in our three county regional competition. Since birds figure large in our family life she'd like to perhaps stay with something poultry related. This year's project involved determining grain preferences among two different flocks of laying hens - White Leghorns and ISA Browns. She's thinking shed like to try something more sophisticated next year to have a better chance at taking first. Anyone have any experiments they would like to suggest?