They come out at night without being called and are lost in the day without being stolen. What are they?

Introduction / Context:
This is a traditional riddle that uses poetic language to describe a natural phenomenon. The subject of the riddle appears at night without anyone calling it and disappears during the day without being taken away. The puzzle checks whether you can connect these descriptions of appearance and disappearance with something you see regularly in the sky.

Given Data / Assumptions:
• The things in question come out at night without being called.
• They are lost in the day without being stolen.
• The options are light, bats, stars and flights.
• We assume the riddle refers to something that appears clearly at night and seems to vanish during daytime.

Concept / Approach:
The main idea is to think about what is visible in the night sky and becomes invisible or hard to see in daylight without physically leaving. Stars are a perfect match: they appear every night as soon as the sky becomes dark and seem to disappear in the day when the Sun’s brightness hides them. They are not stolen or removed; they are still there, just not visible to us. Bats and flights can be active at night, but they do not literally vanish in the day in the poetic way used in the riddle.

Step-by-Step Solution:
Step 1: Notice the phrase come out at night without being called, which suggests a natural and regular occurrence. Step 2: Think of stars gradually appearing in the sky each night as it gets dark, without anyone needing to summon them. Step 3: Notice the phrase lost in the day without being stolen, which hints at something that cannot be seen in daylight even though it still exists. Step 4: Understand that during the day, the bright sunlight outshines the stars, making them invisible to our eyes although they are physically still present in the sky. Step 5: Conclude that stars satisfy both parts of the riddle perfectly, so they must be the correct answer among the options.

Verification / Alternative check:
You can verify this by recalling your own observations. At night, on a clear sky, you can see many stars without doing anything. At sunrise, they gradually fade from view. Yet we know from astronomy that the stars do not actually move away or get stolen during the day. They remain in space all the time. It is only the intensity of sunlight scattered in the atmosphere that makes the stars invisible to our eyes in daytime, matching the riddle description exactly.

Why Other Options Are Wrong:
• Light: Light does not only come out at night; in fact sunlight is stronger during the day, so this does not fit the pattern.
• Bats: Bats are more active at night, but they do not vanish in the day; they sleep or hide, and the phrase without being stolen is not naturally associated with them.
• Flights: Aeroplanes can fly both day and night; they are not specifically lost in the day in the way described.

Common Pitfalls:
Some students quickly think of nocturnal animals like bats because they are associated with night. However, bats do not literally disappear when the Sun rises; they simply hide. Others may be confused by the word lost and think about objects being stolen. The riddle uses lost to describe our inability to see something that is still there. Remembering how stars appear at dusk and fade at dawn helps avoid these misunderstandings.

Final Answer:
The things that come out at night without being called and are lost in the day without being stolen are stars.