DISCUSS: How are these beaks different?
A bird’s beak is like a tool that helps the bird eat. What kinds of tools would you use if you wanted to:
Can you think of a bird beak that works like these tools?
If you’re stumped, advance to the next slide to see our ideas.
At Mystery Science, we use nutcrackers for cracking nuts. A parrot’s beak is short and strong, and it works like a nut cracker.
A spoon is good for scooping up soggy cereal. It works like a duck’s broad bill.
A straw helps you sip soda from the bottom of a tall glass, just like the hummingbird’s beak lets that bird sip the sweet juice called nectar from the bottom of a flower.
A fork can stab a slippery fish, just like the pointy beak of an egret.
In this lesson, students carry out an investigation to determine the relationship between the shape of different bird beaks and the food each bird eats. In the activity, Find the Best Beak, students experiment with long pointy beaks that are great for picking up seeds and wide flat beaks that are good for scooping. They discover that different beaks are best for different kinds of food.
Preview activityBird Beaks worksheet | 1 per student |
Black Beans (Dried)
Any dried beans will work. If you must avoid food, substitute large beads.
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Details
3 ounces per group
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Dixie Cups (3 oz)
Each student will need 2 cups. We suggest having a few extras on-hand.
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Details
2 cups per student
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Elbow Macaroni
If you must avoid food, substitute straws cut into pieces that are about ½” long.
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Details
3 ounces per group
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Masking Tape
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12 feet per group |
Paper Cups (8 oz)
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2 cups per group |
Plastic Straws (Not Bendable)
Each student needs 1 straw. We suggest having a few extras on-hand.
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Details
1 straw per student
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We suggest students work in groups of four. Homeschool students can work on their own.
This activity works best on a low pile carpet. If your classroom has a smooth floor (such as linoleum), you’ll need a bath towel to serve as the work area for each group of 4 students.
Each student will need a “pointy beak” and a “duck beak” to experiment with.
Here’s how to make a “pointy beak”:
Here’s how to make a “duck beak”:
Mark off a test area for each group of four students.
For each group, you’ll need to prepare two cups. One filled with model “bird food” and the other filled with model “rocks.”
At the start of the activity, each student needs a worksheet, “pointy beak,” “duck beak,” and “stomach cup.” Each group also needs a cup of “bird food.”
Each group will need a cup of “rocks” later in the activity. You may want to organize or separate supplies for easier classroom distribution.
Student slideshow: English | Spanish
Teacher printout: English & Spanish
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More Experiments to Try
There are several ways to extend this activity:
* Repeat the activity with additional "foods" in each test square. Rubber bands make good worms. Different pastas can simulate seed pods. Marbles and pennies present a challenge. Which beak works best for which food?
* Simulate situations that make food more difficult to get. Crumple aluminum foil to represent rough tree bark. Sprinkle it with beans and macaroni.
* Check out the “Choose Your Food” activity from AAAS Science Net Links, which includes instructions for adding a mathematical component to the activity. Students count how many food items each beak picks up in a given time. Graph the data to compare the performance of different beaks.
You can elaborate student learning and engagement with Mystery Science mini-lessons.
If you are in an NGSS state, this mini-lesson supports the DCI LS1.A: Structure and Function
Watch videos of different birds eating. After each video, talk about what the bird is eating and how it uses its beak.
Thinking Activity: Explore the similarities between bird beaks and human tools.
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