Strange night call from some bird I never heard
I heard some bird tonight I have never heard before in all of my life. I live in north Knox county TN. The bird made 4 notes every time it "spoke". Was late. Around midnight. The 4 notes it made would each rise in a pitch. Whatever it was, flew very fast on the last call it made. I am sure it was calling something as it flew off in the distance. Wasn`t a screech sound but more like a mellow tone not high in pitch. Weird. May have been calling for a mate or hunting. Wasn`t sure. Anyone have any ideas what it may have been? What flies at night around here and "speaks" while doing so?? I have heard a few owls in the past but this thing was no owl. Not any I have heard anyway.