The terms straight run, pullet, hen, cockerel, stag, and cock are all related to poultry sexing. They generally will imply a chick's gender as well as an age timeframe.
The definitions are as follows -
- Straight Run - These will be sent as hatched, chicks that are not sexed.
- Pullet - a female bird that is between 1 day and 12 months old.
- Hen - a female bird that is over 1 year old.
- Cockerel - a male bird that is between 1 day and 12 months old.
- Stag - a juvenile male bird between 5 months and 11 months old.
- Cock - a male bird over 1 year old.