I have been trying to figure out what is making this noise

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I generally have the windows open in my bedroom, and I like it because in the morning I hear the birds. However, lately every morning I have been hearing this kind of chuff, chuff noise, along with the bird calls. It is repeated and at the same volume everyday, so I am pretty sure it is a bird..but I have listened to a lot of bird calls online and I can't find one that sounds like that. My guess would have been a pheasant or turkey, but they don't make that kind of noise apparently. I thought well, maybe it could be a raccoon. However, they aren't usually up making noise past Dawn, and haven't heard that kind of sound from them anyway..not that I hear them that much. I even checked fox calls. I have listened to 50 bird calls online, and a few animal calls. I wonder what it is..it sounds like a deep chuff is the best way I can describe it. I listened to six turkey calls, but they don't make that noise apparently. Any ideas?