Kaparot is a custom connected to Yom Kippur, where white chickens are slaughtered as a symbolic gesture of atonement. The slaughtered chickens are then donated to the poor.
It is believed that one transfers one's sins from the past year into the chicken.
The kaparot ceremony is held before the Jewish holiday of Yom Kippur, the Day of Atonement, which starts on Friday. Jews traditionally observe this holy day with a 25-hour period of fasting and intensive prayer.