In barns a draught created by the use of these opposed doorways was used in winnowing.
Mandalas are also drawn for essential household items like water pitcher, winnowing tray and broom.
Women spent on an average 15 or 16 hours a day in farm related chores like sowing and winnowing.
Occasionally the back door was small and only used for ventilation or winnowing.
Handling involves threshing the seedheads and winnowing the seed to remove the husk.
The farm buildings included a barn fitted with a steam engine, and machinery for thrashing, winnowing, and dressing.
Coupled with the chaffing and winnowing technique, a sender could get messages out and cover their tracks all at once.
The male performs winnowing display during courtship, flying high in circles and then taking shallow dives to produce a distinctive sound.
