I let my baby duck walk in the interstate near my house
That sounds pretty dangerous. You must have been worried about the duck!
Not at all. That's absolutely silly.
You should have been worried, because the duck could have been run over by a car and killed. When you see a baby animal heading toward a very busy highway you should stop it.
You make absolutely no sense. I wasn't scared of anything. The duck was going to be fine.
It sounds like things worked out this time, but you should be more careful in the future. A driver in a fast-moving car would have a hard time seeing a duck on the road, so there's a high likelihood that your duck could get hurt.