Bird Digestion and Gizzard Function

Jackson introduces a fun activity to simulate a bird's gizzard, explaining its role in the digestive system. He lists materials needed, such as rocks and various foods, to demonstrate how a gizzard crushes food. The activity involves using a bag to represent the gizzard and hands to mimic muscular walls. Jackson explains the importance of rocks in the gizzard and demonstrates crushing different foods. The video concludes with observations and a reminder not to use rice in bird feed.

What is the primary function of a gizzard in the digestive system?

• To absorb nutrients

• To crush and grind food

• To store food temporarily

• To produce digestive enzymes

Which of the following animals does NOT have a gizzard?

• Crocodile

• Dog

• Fish

• Earthworm

What do the rocks represent in the gizzard activity?

• Food storage

• Muscles

• Teeth

• Digestive enzymes

Why do birds need to swallow rocks?

• To help them fly

• To aid in food digestion

• To store energy

• To build nests

In the activity, what does the bag represent?

• The bird's crop

• The bird's gizzard

• The bird's beak

• The bird's stomach

What is the purpose of the crop in birds?

• To produce digestive enzymes

• To absorb nutrients

• To store food temporarily

• To grind food

Which food item was found to be indestructible during the activity?

• Fruit snacks

• Grapes

• Cereal puffs

• Sunflower seeds

What was the suggested alternative to using rice in the activity?

• Fruit snacks

• Nuts

• Cereal

• Grapes

Why should rice not be fed to birds?

• It lacks nutritional value

• It attracts predators

• It expands with moisture and can harm them

• It is too hard for them to digest

What was the main conclusion of the gizzard activity?

• Birds should eat more rocks

• Birds can digest any type of food

• The gizzard is not important for digestion

• The gizzard effectively grinds food with rocks