must go for red chaq hen on this one nutritional value, is more than just the colour of their droppings ,,,,,, if you eat plenty beetroot , you might have a fright when going to the toilet ;D,, same as when you feed hormoform , the droppings will be a red colour , if i had green droppings ;D ;D i would be in hospital ;D ;D,, but the gist being different grains will produce slightly different colouring , some grains of any year can hold a different moisture content , of the same grains another year, then theres grains that will contain more fibre,,,,,feeding on ,say maples will produce larger droppings than say,, feeding barley,, so different feeding can produce slightly different colour and size of droppings, but can see sammy,s point , during the racing season we would plainly like to see ,good firm droppings with a white" walls icecream" topping ;D