Egg to Owl.pdf
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Scott Foresman Science
Genre
Comprehension Skill
Text Features
Science Content
Nonfi ction Put Things in Order
• Captions
• Labels
• Glossary
Life Cycles
Scott Foresman Science 1.4
ì<(sk$m)=bdheec< +^-Ä-U-Ä-U
ISBN 0-328-13744-8
Vocabulary
Extended Vocabulary
larva
life cycle
pupa
seed coat
seedling
tadpole
down
fl edge
hatch
nest
nocturnal
owlet
by Jessica Quilty
Picture Credits
Every effort has been made to secure permission and provide appropriate credit for photographic material.
The publisher deeply regrets any omission and pledges to correct errors called to its attention in subsequent editions.
Photo locators denoted as follows: Top (T), Center (C), Bottom (B), Left (L), Right (R), Background (Bkgd).
5 (T) Roger Tidman/Corbis.
Unless otherwise acknowledged, all photographs are the copyright © of Dorling Kindersley, a division of Pearson.
ISBN: 0-328-13744-8
Copyright © Pearson Education, Inc. All Rights Reserved. Printed in the United States of America.
This publication is protected by Copyright, and permission should be obtained from the publisher prior to any
prohibited reproduction, storage in a retrieval system, or transmission in any form by any means, electronic,
mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to
Permissions Department, Scott Foresman, 1900 East Lake Avenue, Glenview, Illinois 60025.
3 4 5 6 7 8 9 10 V010 13 12 11 10 09 08 07 06 05
What You Already Know
Plants and animals change as they grow.
These changes are called life cycles. Different
living things have different life cycles.
A frog begins as an egg. A tadpole hatches
out of the egg. The tadpole grows to be a frog.
Butterfl ies change and grow too. They start
as an egg. A larva, or caterpillar, hatches
from the egg. It looks very different from
an adult butterfl y. Next the larva
changes in a hard cover. It is
then a pupa. The pupa is
a butterfl y when it comes
out of the cover.
Plants change and grow. Many plants
begin as seeds. Seed coats are hard covers
that keep seeds safe. Seedlings grow from
seeds. These young plants can then grow
fl owers, stems, and leaves.
Trees are plants. Some trees
have fl owers. Some trees have
cones. Trees grow and change.
Just like other living
things, owls have life
cycles. Owls change
and grow in many
ways. You are now
going to read about
some of the ways owls
change and grow.
This butterfl y has
just come out of
its hard cover.
Barn owl
2
3
Finding a Nest
An owl needs a good nest so it can lay
eggs. Different owls fi nd nests in different
places. Barn owls do not build their own
nests. They use nests they fi nd.
Owl eggs
Barn owls use nests in caves and in trees.
They will also nest in the roofs of buildings.
Owl nests protect eggs. They help to keep
eggs safe from other animals. They also help
keep owls, eggs, and babies warm.
4
5
Hatching
Baby owls are called owlets. Crack by
crack they make their way out of their eggs.
The owlets are very small. They have down.
Down is soft feathers. This down goes away
as they grow.
Barn owls wait for their eggs to hatch.
Mother owls sit on the eggs. The eggs need
to stay warm.
After about thirty days an egg begins
to hatch. Barn owls lay one egg at a time.
They may wait one day to lay another egg.
The eggs hatch in order.
The owlet breaks the egg.
It starts to come out.
Slowly, the owlet
comes out.
6
7
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