Age chickens begin to lay

chicken's begin laying eggs when it is a layer and for egg production purposes,,, it lays egg between 42 days to its production life span.. but the produce in the first year would be lesser in the next year of production... and some factors may also affect its laying age,,, it does also vary with its type or kind of breed.... the feed ration given to the birds are also in consideration... the type of house where they are housed and the temperature of the area...