Duck

1. Color of females

1.1. Brown

1.2. Black

2. Color of males

2.1. Dark green

2.2. Brown

2.3. Balck

3. Food

3.1. Plant 91 %

3.1.1. Grass

3.1.2. Seeds

3.1.3. Potatoes

3.1.4. Beet

3.2. Animal 9 %

3.2.1. Fish

3.2.2. Frogs

3.2.3. Mice

4. Feathers

4.1. Surface feathers

4.2. Down

5. Presence

5.1. Europe

5.2. Asia

5.3. North America