It is needless to say why a cat charms a bird, a cat is a carnivorous animal and it enjoys the cuisine it can have by making a bird its prey. So a cat will certainly charm a bird to make it its prey. But the important thing is that is it possible for the cat to charm birds and when ever you observe the behaviour of cats you will find that they are unable to perform the job. And it is not only their inability, it is all about the smartness of the bird; they know that no cat can be a friend to a bird and when ever they go near it they will certainly die, so seldom will you find that a bird is approaching a cat voluntarily.
Sometimes a cat can make a bird its prey but that happens usually when the cat is stalking it and it came close to the cat because of some reason and that is usually food
Sometimes a cat can make a bird its prey but that happens usually when the cat is stalking it and it came close to the cat because of some reason and that is usually food