DUCKS

DUCKS: SUPPORT, PROTECTION, MOVEMENT

• Endoskeleton
• Camouflage in their nests

DUCKS: SUPPORT, PROTECTION, MOVEMENT

• Have wings to fly
• Webbed feet to walk
• Also can swim atCross the surface of a body of water

DUCKS: HOMEOSTASIS

• Have feathers that provide insulation
• Legs and feet have scales to minimize heat loss
• At reserves serve as insulation for the body

DUCKS: HOMEOSTASIS

• Fluff their feathers to provide additional insulation
• Tuck a foot or their bill in their feathers
• Gather in large packs in small, tight spaces and share body heat
• Stand in the sun
• Shivering

DUCKS: CIRCULATION AND RESPIRATION

• 4 chambered heart and blood vessels
• Closed Circulatory System
• Blood carried through body by arteries

Ducks: Circulation and Respiration

• Require a lot of oxygen
• Oxygen carried through: Nostrils, Trachea, Lungs, and Air Sacs
• Oxygen passed from lungs into the blood stream, then to body cells

Ducks: Digestion and Nutrition

• Ducks have no teeth, grind up food in digestive system
• Store food so that energy can be used
• Stomach is made of 2 parts: Proventriculus and Gizzard

Ducks: Digestion and Nutrition

• Eat a lot of leafy greens
• Ducks are omnivorous
• Also eat small fish and eggs of fish

Ducks Reproduction

• They reproduce sexually
• Described as a "sexual arms-race"
• Ducks lay egg

Ducks Reproduction

• External fertilization
• Ducks form seasonal bonds with a partner
• Seasonal bond is called: "Seasonal Monogamy"

Works Cited

• ducks.org/conservation/waterfowl-biology/waterfowl-mating-systems/
• campus.murraystate.edu/academic/faculty/tderting/cva_atlases/canduck/digest...
• teacher.scholastic.com/activities/explorations/lizards/libraryarticle.asp?I...