Abu Dawud Book 23, Hadith Number 3908.
Chapter : Taking omens.
Narated By N/A : ‘Ata’ said: People said: safar is a pain within the belly. I asked: What is hamah? He said: People said (believed) that hamah which is an owl or a flight bird and which shrieks is the spirit of men. It is not the spirit of men. It is an animal.