
Fold 3 · Early Reader
Ages 8–10
PenguinWings for the Sea
Words to know
- penguin
- a bird that swims
- flipper
- a penguin wing
- feather
- part of a bird's coat










A penguin is a bird. This one stands on the ice next to the water.




Penguins flap their wings to swim. They cannot fly.
Flap, flap, zip!



A penguin's wings are called flippers. Flippers help a penguin zip in the water.
Can you spot them?



This penguin has webbed feet. In the water, they help it zig and zag.
On the ice, it stands on them.



A penguin has a slim, slick shape. That shape helps it glide in the water.



Penguins dive to get food. They dive down into the water.




Penguins must come up for air. Then they can dive again.
Glands help penguins get rid of extra salt.



Penguins gulp down fish. Some penguins gulp krill as well.




A penguin can see in the water. It can also see on land.
Dense bones help penguins dive.



An adult penguin has lots of feathers. The feathers help stop the water from getting in.



A penguin uses its bill to fix up its feathers. It puts them back in place.



Penguins shed feathers. Fresh feathers come in to take their place.




Adult penguins have dark backs and light fronts.
Can you see them on these two penguins?



A penguin chick begins its life inside an egg. The chick gets big in the shell.



Penguins warm their eggs.




The chick makes a hole in the shell. It chips and chips at it. At last, the chick is in the world!



Penguins feed their chicks.
An adult brings up food from its gut. The chick pokes its bill in to get it.



A penguin chick has soft fluff called down. Down does not stop water from getting in. So the chick does not swim yet.



In time, the chick gets a fresh set of feathers. Then it can walk to the water and swim.



Some penguins stand close to keep warm.




Some penguins live in warm places. Their homes are not on ice.




Penguins can get very hot.
These penguins can hide in lava cracks and caves.



These penguins swim in the water, as well. They dive to get fish.




Give wild penguins lots of space. Do not chase them or pick them up. Just stand back and look.








A penguin's feet help it zig and zag. Its flippers help it zip.

Think about it
Can a penguin fly?
Show the answer
No! It flaps its wings to swim.



Pick a page from this book. Tell a friend what a penguin can do.
The end
Penguin: Wings for the Sea
