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.
attendant. 1  n a person who is present and participates in a meeting. 2  n an event or situation that happens at the same time as or in connection with another. 3  n someone who waits on or tends to or attends to the needs of another. 4  adj being present (at meeting or event etc.) attendant members of the congreation.