... steam dryer at temperature of 120 C for 30 mins.6. was taken from the slaughtered geese.We are in the ... . washed white duck feather 2-4cm, 3-5cm, 4-6cm, 6-8cm2. washed grey duck feather 2-4cm, 3-5cm, 4 ... -6cm, 6-8cm1. washed white goose feather 2-4cm, 3-5cm, 4 ... -6cm, 6-8cm2. washed grey goose feather 2-4cm, 3-5cm, 4 ...