(Olney, MD USA)
About two weeks ago, one of our 13-year old Cockatiels named, Bonnie, passed away. A couple days ago I noticed that our other Tiel, Clyde's head is slightly bent forward and the feathers around his ears look like they are puffed out. He is acting completely normally: chirping, whistling and talking... he just looks strange. Is he just sad or could it be something more serious?