Golden Retriever Stud Dog

We have been hearing this crtauere in our area for the last week between the hours of 10 p.m. and 4:30 a.m. I also have many cats from various rescue efforts . Most are either in our house or in the barn at night. The cries sound frustrated to a calling type of bark, as though looking for its cubs. The frustrated screech I surmised was because she can't get at our barn cats.Does anyone know why they screech? Mating calls?Thank you for the recordings. I had no idea what it was until I heard the video tape. We live in s.w. Connecticut.