Six Hours

Any youngsters which has flown more than six hours whether it was first home or an also ran should not go the following week.

Taken from Widowhood Flying
by Mark Gordon

Escheria Coli

The most common ailment developed by racing pigeons in a state of 'stress' is known as 'Escheria Coli'. This occurs when the bacteria in the intestines is brought into a state of imbalance, such as when 'stress' has robbed the bird of its appetite. Thus, an increase in Escheria Coli creates watery, green droppings, sometimes associated with a jelly-like substance. The next stage is 'Going Light' and if something is not done quickly the pigeon dies.

Taken from Ailments & Diseases of The Racing Pigeon

by Old Hand