An object (A duck) keeps falling straight through the floor (solved)

The duck has rigidbody,and yet it still falls through the floor.This was my first attempt to actully make a game so …Yeah im kind of a noob.Please help!

Did yxou add a collider to the Floor too?

If you don´t want the duck to fall - hit the “kinematic” toggle in the rigidbody box ^^