Why do bats come to eat fruit at night - what is the scientific explanation?

Bats come to eat fruit at night: Although bats have two large eyes, they cannot see through them. Bats have to do the work of seeing with their ears. Night and day are the same thing to the one who does not see. Bats shouldn't be a problem during the day, but bats are. Bats actually navigate using sound waves. When a bat moves, it emits a sound wave in the air. That sound is reflected by houses, trees, mountains or any big obstacle and comes back to the bat's ears. The bat's brain can tell how far the obstacle is from the reflected sound. Bats are primarily frugivores. They rely on sound waves as well as the smell power of the nose to find the address of fruits like guava, litchi, jamrul etc.

Most of the animals in the world, including humans, are awake during the day. Billions of sounds spread through the air due to their daily activities. That special sound wave of bat passage is lost in the noise of diurnal animals. So bats don't leave their nests during the day because they can't find their own sound wave in the crowd of billions of sound waves.