How can a bat tell the size of a flying insect ?

The wings of a bat and the wings of an insect are :

Wings of bat and insect show

Why is the wing of a bat said to be homologous to the wing of a bird and analogous to the wing of an insect?

What is thorn? How can you tell it is modified stem?

What is thorn? How can you tell it is modified stem?

Bat can travel with

Bat can travel with

Bat can travel with

Bat is a flying mammal

The kind of evolution seen between flying insects, birds and bats is