I was working in my brother-In-law's backyard & a very tame bird flew close & landed 6 feet from me. As I moved around the yard it followed me. A few minutes later it hovered in front of my face & landed on my head. It stayed there several minutes before flying off but remained in the backyard. It then landed on my brother-in-law's head & sat there a few minutes, then back on my head awhile. It remained in the backyard until I finished working I went home. No idea what kind of bird it is or how it trusted humans. Maybe it hatched in someone's home & stayed there until it could fly. I'll try to attach photos. This is just northwest of Dallas, Texas. Ok, struggling with techie stuff, photos soon. I hope.