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Birds General Features and Structure

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Questions and Answers

What percentage of a bird's weight is contributed by the chest muscles?

30%
20%
40%
35% (correct)

What is the primary function of a bird's wings?

To help them swim
To provide them with the ability to fly (correct)
To protect them from predators
To regulate their body temperature

What are the two types of feathers found in birds?

Down feathers and Fur feathers
Summer feathers and Winter feathers
Flight feathers and Down feathers (correct)
Waterproof feathers and Insulating feathers

What is the material that makes up a bird's feathers?

Keratin (D) Signup and view all the answers

Why do birds have strong chest muscles?

To move their wings and fly (B) Signup and view all the answers

What is unique about a bird's jaws and teeth?

They have lightweight keratin beaks instead of teeth (C) Signup and view all the answers

What is a major significance of a bird's beak structure?

Eating, preening, and defending (B) Signup and view all the answers

What is the primary function of air sacs in birds?

To inhale air and push it to the lungs (D) Signup and view all the answers

What is unique about the heart of birds?

It has a large four-chambered structure (D) Signup and view all the answers

What is a characteristic of the feet of birds like owls and eagles?

They have sharp, curved talons for catching prey (B) Signup and view all the answers

Why is it essential for birds to have a lightweight body?

To stay aloft during flight (A) Signup and view all the answers

What is unique about the feet of birds like seagulls and ducks?

They have webbed feet for swimming and walking (A) Signup and view all the answers

What is the primary function of a bird's crop?

Moistening and storing food before digestion (B) Signup and view all the answers

What is unique about a bird's kidneys?

They are located on the underside of the pelvis (C) Signup and view all the answers

What is a characteristic of a bird's brain?

It is larger compared to body size (C) Signup and view all the answers

What is a feature of a bird's circulatory system?

It has a larger heart (B) Signup and view all the answers

What is a characteristic of a bird's urinary system?

They do not have a bladder (B) Signup and view all the answers

What is a characteristic of a bird's vision?

They have excellent sight (D) Signup and view all the answers