Use this A2-B1 ESL science reading passage to learn why owls sleep during the day. It includes key vocabulary, reading comprehension questions, and answers for English learners.

Reading Level
A2-B1
Word Count
246 words
Reading Passage
Many owls sleep during the day because they are nocturnal. Nocturnal animals are awake when many other animals are sleeping. They rest during the day and look for food at night.
Owls are good night hunters. Many owls eat small animals such as mice, insects, or small birds. Night can be a good time to hunt because it is cooler and quieter. Some prey animals are also active after dark.
Owls have large eyes that help them see in low light. Their eyes collect more light than human eyes. This helps owls notice movement in the darkness.
Owls also have very good hearing. Some owls can hear tiny sounds under leaves, grass, or snow. Their ears help them find prey even when they cannot see it clearly.
Another helpful feature is their soft feathers. Many owls can fly quietly. Quiet flight helps them move close to prey without making much noise.
During the day, many owls rest in trees, holes, or other safe places. Resting helps them save energy for the night. It also helps them avoid animals that may bother them in daylight.
Not all owls follow the same schedule. Some owls are active in the early morning or evening. A few may hunt during the day. But many owls sleep in daylight because their bodies are made for night life.
Owls show us that animals can live on different schedules. For them, night is often the best time to wake up, hunt, and survive.

Key Vocabulary
| Word | Meaning | Example |
|---|---|---|
| nocturnal | active at night | Owls are often nocturnal animals. |
| darkness | a place or time with little or no light | The owl can see movement in the darkness. |
| hearing | the ability to notice sound | Good hearing helps owls find prey. |
| energy | the power to move, grow, or work | The owl saves energy during the day. |
| prey | an animal hunted by another animal | A mouse can be prey for an owl. |
Reading Comprehension Questions
- What does nocturnal mean?
- Why can night be a good time for owls to hunt?
- How do large eyes help owls?
- Why is quiet flight useful for owls?
- Do all owls sleep during the whole day?
Answers
- Nocturnal means active at night.
- Night can be cooler and quieter, and some prey animals are active then.
- Large eyes help owls see in low light.
- Quiet flight helps owls move close to prey without much noise.
- No. Some owls are active in the morning, evening, or daytime.
Short Summary
Many owls sleep during the day because they are active at night. Their eyes, ears, soft feathers, and resting habits help them hunt and survive.
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