I have only used my crow call and it usually has worked all day...not this year. It works from about 8-10 in the morning...thats it. I have an owl call and a hawk call but i dont know how to use them. I really need to know how to use the owl call so i can locate them in the morning before they come out of the roost. When i blow into it it sounds more like a mallard call...how do you use it? Same with the hawk screamer. are they supposed to be short screams or what? i know it will be hard to describe, but id appreciate any attempts. These three calls are from knight and hale and came in a set. Thanks