The answer to that is 21 days exactly, although you need to bear in mind that this can vary, depending on a number of circumstances. Generally speaking however, fertile chicken eggs which are hatched out by a hen will take 21 days before you see little faces staring at you from underneath their mamma's wings.
In linguistics, a register is a variety of a language used for a particular purpose or in a particular social setting.
n a place in the memory where a unit of data may be stored or retrieved. n the ability to recall events, experiences, information, or skills that occurred or were acquired in the distant past. n a register in storage of a computer, in contrast with a register in one of the other units of the computer. n the ability to retain and recall recent events or experiences.