Forecasting methods can help estimate many such future aspects of a business operation. The goal of forecasting is to come as close to possible to an accurate picture of the future. But, as with other forms of fortune telling, it can never be fully accurate.
The cere is the fleshy band of tissue containing the nares. Young budgies of all colors start out with a pale bluish or light tan cere, depending on the budgieâs feather color. As they reach sexual maturity, the cere color will usually change.
In the case of birds of prey where the tip of the mandible may form a long festoon, the length of the festoon may be measured separately as well. In birds of prey the measurement is usually from the bill tip to the ceres. In some birds the distance between the back of the skull and the tip of the beak may be more suitable and less prone to variation resulting from the difficulty of interpreting the feathered base of the mandible.