Ducks smell of shame. Ducks are omnivorous animals, whether it is feed or insects, earthworms, fish and shrimp, etc. They can be used as food for ducks. Because food contains a lot of fat, duck down contains a lot of fat, which generally smells fishy, which is called "fat fishy" or "duck body odor" in the industry. Down jackets have almost no odor.

2. Different warmth retention.

Down is fatter than duck down and bigger than duck down. Correspondingly, down has higher hollowness, better bulkiness and better resilience.

Extended data:

Down has three main performance indicators:

1 indicator is the filling weight, such as 400g goose down sleeping bag and 1 100g duck down sleeping bag. This weight does not refer to the weight of sleeping bags, but to the net weight of down.

The second index is down content. Down is composed of feathers and down. Feathers play an auxiliary role, and warmth mainly comes from fine down. The cashmere content is expressed as a percentage, for example, 80 cashmere content means that the cashmere content in 100 weight unit is 80 units. Generally, the highest cashmere content of duck down is 85 to 90, and the cashmere content of goose down can reach 90 to 95.

The third index is the swelling degree of down, which refers to how many cubic inches an ounce of down has under the pressure of 68.4 grams. The higher the swelling degree of down, the better the warmth retention of down. Generally, the swelling degree of domestic duck down is about 450, and that of domestic goose down is between 450 and 600. The cashmere content of Andes geese imported from the United States can reach about 95, and the highest swelling degree is 700 to 800.