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.
1 The coloration of the cere on some parakeets, such as the Budgerigar, is different for the male and the female making it easy to sex them. 2  Parakeet Songs 3  : Parakeets are fairly intelligent birds. 4  Each species has its own set of calls with some birds being quite adept at mimicking sounds they hear.