strange animal laughing

Jessie was out on the porch calling Sarah to come in.She came in and said "mom some strange animal is out there laughing at me. it goes waaah waaah waaah" I laugh and send her back out. Joey goes with her to the porch and they both come back in and Joey says the same thing and imatates it.Jessie looks at me all pittiful and says mom come listen. So Haley and I follow her and Joey outside and listen. we hear it right away and Jessie looks at me all worried and freaked out and Haley looks up at her and says "It's a duck Jessie" it was the duck that lives across the street. I about died laughing at her