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1、www.readinga-Visit www.readinga- for thousands of books and materials.Written by Karen MocklerOwls OverheadA Reading AZ Level O Leveled BookWord Count:762LEVELED BOOK OILOOwls Overheadwww.readinga-Written by Karen MocklerOwls OverheadPhoto Credits:Front cover:Manfred Danegger/Science Source;back cov

2、er:Brian Bevan/;title page:Kim Taylor/Minden Pictures;pages 3,10:Wayne Lynch/All Canada Photos/Superstock;pages 4,9(inset):Stephen Dalton/Minden Pictures;page 5(left):Markus Varesvuo/Minden Pictures;page 5(right):Henrik Nilsson/Solent News/Rex/Rex USA;page 6(top):age fotostock/Superstock;page 6(bott

3、om):Claus Meyer/Minden Pictures;page 7(top):Linda Wright/Science Source;pages 7(bottom),8(main):Arterra Picture Library/Alamy;page 8(inset):All Canada Photos/Alamy;page 9(main):Rolf Nussbaumer/Minden Pictures;page 11(left):Rick&Nora Bowers/Alamy;page 11(right):iS Hildebrand;page 12:Steve Maslowski/V

4、isuals Unlimited/Corbis;page 13(main):Tier und Naturfotografie/Superstock;page 13(inset):Larry Miller/Science Source;page 14:Tom Mangelsen/Minden Pictures;page 15:Harri Taavetti/FLPA/age fotostockFront cover:Barn owlBack cover:Little owlTitle page:Tawny owlOwls OverheadLevel O Leveled Book Learning

5、AZWritten by Karen MocklerAll rights reserved.www.readinga-CorrelationLEVEL OM2028Fountas&PinnellReading RecoveryDRA34Table of ContentsFlying in the Moonlight .4Eyes for the Night .5Even Better Ears .8Silent Hunters .10Where Owls Live .12Owls Are Out There .15Glossary .16Flying in the MoonlightIts a

6、 quiet,moonlit night,and you walk along a dirt path on the edge of town.Suddenly,a shadow crosses your path,but you hear no sound.You look up as a dark shape glides over you and disappears into the nearby trees.Its an owlone of more than two hundred different species of owls that live around the wor

7、ld.They come in many sizes and live on every continent except Antarctica.Boreal owletsTawny owlOwls Overhead Level O34Table of ContentsFlying in the Moonlight .4Eyes for the Night .5Even Better Ears .8Silent Hunters .10Where Owls Live .12Owls Are Out There .15Glossary .16Flying in the MoonlightIts a

8、 quiet,moonlit night,and you walk along a dirt path on the edge of town.Suddenly,a shadow crosses your path,but you hear no sound.You look up as a dark shape glides over you and disappears into the nearby trees.Its an owlone of more than two hundred different species of owls that live around the wor

9、ld.They come in many sizes and live on every continent except Antarctica.Boreal owletsTawny owlOwls Overhead Level O56Eyes for the NightMany of the adaptations that help owls survive also make them seem mysterious.For instance,most owls hunt at night.As a result,they dont have to compete with daytim

10、e hunters such as eagles,hawks,and falcons.Like most birds,owls cant move their eyes in their sockets.Instead,owls must turn their heads to track a moving object.Owls are able to rotate their heads almost all the way around280 degrees.They can even turn their heads upside down.Owls big eyes are an a

11、daptation,too.These birds cant see in total darkness.However,their pupilsthe black circles in the center of their eyescan grow large to let in more light.Their large pupils let them see better in low light than most animals.In fact,when light is low,tawny owls see as much as one hundred times better

12、 than humans.Northern hawk owlBurrowing owlAn owls pupils are small in bright light(top)and large in low light(bottom).Owls Overhead Level O56Eyes for the NightMany of the adaptations that help owls survive also make them seem mysterious.For instance,most owls hunt at night.As a result,they dont hav

13、e to compete with daytime hunters such as eagles,hawks,and falcons.Like most birds,owls cant move their eyes in their sockets.Instead,owls must turn their heads to track a moving object.Owls are able to rotate their heads almost all the way around280 degrees.They can even turn their heads upside dow

14、n.Owls big eyes are an adaptation,too.These birds cant see in total darkness.However,their pupilsthe black circles in the center of their eyescan grow large to let in more light.Their large pupils let them see better in low light than most animals.In fact,when light is low,tawny owls see as much as

15、one hundred times better than humans.Northern hawk owlBurrowing owlAn owls pupils are small in bright light(top)and large in low light(bottom).Owls Overhead Level O78Pellets!Owls cant chew or grind their food.Instead,they often swallow small prey whole.They cant digest the unwanted parts of the anim

16、als.Teeth,claws,and small bones,stuck together with bits of fur or feathers,end up in the gizzard.Thats a part of their stomach with strong muscles that roll those parts into small balls,called pellets.A few hours after they eat,owls cough up a pellet.Scientists look through the pellets to learn wha

17、t owls eat.As good as their night vision is,owls cant see things close to their faces.Instead,hairlike feathers work like feelers to help owls react to things they touch,sort of like a cats whiskers.Even Better EarsTo hunt,however,most owls rely on their hearing.Most owls have huge ears,with one hig

18、her than the other.The higher one hears sounds from above,while the lower one hears sounds from below.Their flat,round faces help funnel sounds to their ears.By moving the feathers around their faces,owls can send more sound to one ear or the other.Doing this helps them locate prey.The hairlike feat

19、hers on owls faces help them react to things they touch.Some owls even have these feathers on their feet!Owl pelletOwls have very large ears,which are hidden under feathers.Some owls have thin skin that covers the ears openings.Upper earLower earOwl skullOwls Overhead Level O78Pellets!Owls cant chew

20、 or grind their food.Instead,they often swallow small prey whole.They cant digest the unwanted parts of the animals.Teeth,claws,and small bones,stuck together with bits of fur or feathers,end up in the gizzard.Thats a part of their stomach with strong muscles that roll those parts into small balls,c

21、alled pellets.A few hours after they eat,owls cough up a pellet.Scientists look through the pellets to learn what owls eat.As good as their night vision is,owls cant see things close to their faces.Instead,hairlike feathers work like feelers to help owls react to things they touch,sort of like a cat

22、s whiskers.Even Better EarsTo hunt,however,most owls rely on their hearing.Most owls have huge ears,with one higher than the other.The higher one hears sounds from above,while the lower one hears sounds from below.Their flat,round faces help funnel sounds to their ears.By moving the feathers around

23、their faces,owls can send more sound to one ear or the other.Doing this helps them locate prey.The hairlike feathers on owls faces help them react to things they touch.Some owls even have these feathers on their feet!Owl pelletOwls have very large ears,which are hidden under feathers.Some owls have

24、thin skin that covers the ears openings.Upper earLower earOwl skullOwls Overhead Level O910Their hearing is so good that they can hear bugs in grass or mice in snow.In fact,owls have better hearing than any other group of birds.Great gray owls can hear a mouse hidden under 18 inches(46 cm)of snow.On

25、ce theyve located their prey,they can dive under the snow to grab a meal.Barn owls can hear a mouse moving 90 feet(27 m)away and catch one in complete darkness.They have the best hearing of any animal ever tested.Silent HuntersMany animals that owls hunt also have excellent hearing.So if an owl want

26、s to eat,it must attack by surprise.The soft feathers that cover owls bodies allow them to fly silently.A great horned owl will sit high on a tree branch,watching until the time is right to attack.A skillful hunter,it feeds on many kinds of animals,even skunks and snakes.In Florida,one great horned

27、owl tackled a 6-foot (2 m)indigo snake and won.It also eats birds,including eight other owl species.In fact,many large owls eat small owls.Owls,such as this barn owl,often crush their prey with their strong feet and sharp talons.The grip of some owls can be ten times stronger than a humans grip.Grea

28、t horned owls are excellent hunters.They can even catch another bird in flight.Owls Overhead Level O910Their hearing is so good that they can hear bugs in grass or mice in snow.In fact,owls have better hearing than any other group of birds.Great gray owls can hear a mouse hidden under 18 inches(46 c

29、m)of snow.Once theyve located their prey,they can dive under the snow to grab a meal.Barn owls can hear a mouse moving 90 feet(27 m)away and catch one in complete darkness.They have the best hearing of any animal ever tested.Silent HuntersMany animals that owls hunt also have excellent hearing.So if

30、 an owl wants to eat,it must attack by surprise.The soft feathers that cover owls bodies allow them to fly silently.A great horned owl will sit high on a tree branch,watching until the time is right to attack.A skillful hunter,it feeds on many kinds of animals,even skunks and snakes.In Florida,one g

31、reat horned owl tackled a 6-foot (2 m)indigo snake and won.It also eats birds,including eight other owl species.In fact,many large owls eat small owls.Owls,such as this barn owl,often crush their prey with their strong feet and sharp talons.The grip of some owls can be ten times stronger than a huma

32、ns grip.Great horned owls are excellent hunters.They can even catch another bird in flight.Owls Overhead Level O1112While most owls hunt only at night,snowy owls hunt mostly during the day.Thats because summer nights in the Arctic are so short.The tiny elf owl hunts during the day as well,feeding mo

33、stly on insects.The main diet for most owls,though,is small mammalslots of them.A hungry great gray owl may eat 1,400 voles in a year.In its lifetime,a barn owl may eat 11,000 mice!Where Owls LiveSome owls can live in many different habitats.The great horned owl lives in swamps,forests,prairies,moun

34、tains,and deserts.Barn owls live under bridges as well as in caves,empty houses,church towersand barns,of course!Elf owlSnowy owlA barn owl lives up to its name by raising its young in a barn.Owls Overhead Level O1112While most owls hunt only at night,snowy owls hunt mostly during the day.Thats beca

35、use summer nights in the Arctic are so short.The tiny elf owl hunts during the day as well,feeding mostly on insects.The main diet for most owls,though,is small mammalslots of them.A hungry great gray owl may eat 1,400 voles in a year.In its lifetime,a barn owl may eat 11,000 mice!Where Owls LiveSom

36、e owls can live in many different habitats.The great horned owl lives in swamps,forests,prairies,mountains,and deserts.Barn owls live under bridges as well as in caves,empty houses,church towersand barns,of course!Elf owlSnowy owlA barn owl lives up to its name by raising its young in a barn.Owls Ov

37、erhead Level O1314Some owls require a special habitat,though.Burrowing owls live mostly on the prairie and nest underground,using old burrows dug by mammals.When open spaces are hard to find,they move to cemeteries and golf courses,and even near airport runways.Spotted owls can only survive in old-g

38、rowth forests.By 1994,80 percent of their former habitat had been destroyed by logging.To protect the spotted owl,loggers cut down fewer trees,but barred owls have since taken over spotted owl habitat.Today,they outnumber spotted owls in the northwestern United States.An Owls Housekeeper Screech owl

39、s in Texas hunt snakes.However,they bring one kind of snake back to their nest alive:the blindsnake.They let it go inside the nest,where it eats the maggots that feed on the dead animals stored there.The snake becomes a housekeeper!Burrowing owls can scare away other animals by making a sound like a

40、 rattlesnakes.Spotted owls do not fly south for the winter.Owls Overhead Level O1314Some owls require a special habitat,though.Burrowing owls live mostly on the prairie and nest underground,using old burrows dug by mammals.When open spaces are hard to find,they move to cemeteries and golf courses,an

41、d even near airport runways.Spotted owls can only survive in old-growth forests.By 1994,80 percent of their former habitat had been destroyed by logging.To protect the spotted owl,loggers cut down fewer trees,but barred owls have since taken over spotted owl habitat.Today,they outnumber spotted owls

42、 in the northwestern United States.An Owls Housekeeper Screech owls in Texas hunt snakes.However,they bring one kind of snake back to their nest alive:the blindsnake.They let it go inside the nest,where it eats the maggots that feed on the dead animals stored there.The snake becomes a housekeeper!Bu

43、rrowing owls can scare away other animals by making a sound like a rattlesnakes.Spotted owls do not fly south for the winter.Owls Overhead Level O1516Owl SoundsOwls arent always silent,nor do they all hoot.They use different sounds to call a mate,warn of danger,or claim an area.Each species has its

44、own calls that set it apart from other owls.A great horned owl can bark like a dog and meow like a cat.Barn owls dont hootthey scream.Their strange cry and ghostly appearance once made some people think of barn owls as bad luck.Owls Are Out ThereIts rare to see an owl,but theyre out there.If youre i

45、n the country and want to spot one,try going out at dawn or dusk.Listen for their calls.If you stay out late enough,people might think youre an owla night owl,that is.Glossaryadaptations(n.)changes that allow an animal to survive better in its environment(p.5)attack(v.)to act harmfully toward(p.10)h

46、abitats(n.)the natural environment of a plant or animal (p.12)mysterious(adj.)odd;not easy to understand(p.5)old-growth(adj.)of or relating to very old forests(p.14)prey(n.)an animal that is hunted and eaten by another animal(p.8)rotate(v.)to turn on a center;to revolve(p.5)species(n.)a group of liv

47、ing things that are similar and can produce young(p.4)survive(v.)to stay alive(p.5)Photographers take pictures of a great gray owl,the largest species of owl in the world.Owls Overhead Level O1516Owl SoundsOwls arent always silent,nor do they all hoot.They use different sounds to call a mate,warn of

48、 danger,or claim an area.Each species has its own calls that set it apart from other owls.A great horned owl can bark like a dog and meow like a cat.Barn owls dont hootthey scream.Their strange cry and ghostly appearance once made some people think of barn owls as bad luck.Owls Are Out ThereIts rare

49、 to see an owl,but theyre out there.If youre in the country and want to spot one,try going out at dawn or dusk.Listen for their calls.If you stay out late enough,people might think youre an owla night owl,that is.Glossaryadaptations(n.)changes that allow an animal to survive better in its environmen

50、t(p.5)attack(v.)to act harmfully toward(p.10)habitats(n.)the natural environment of a plant or animal (p.12)mysterious(adj.)odd;not easy to understand(p.5)old-growth(adj.)of or relating to very old forests(p.14)prey(n.)an animal that is hunted and eaten by another animal(p.8)rotate(v.)to turn on a c