So, Blu is currently living in my bedroom recovering from some surgery before we take him back to the farm. My button quail, Quark, is allowed out while I'm in the room and keeps him company (read: eats his foot, runs circles around his feet, and climbs all over him if he lays down... I think Quark is in love). Quark makes a LOT of noise, it's like he's always muttering to himself, and he gets excited easily and trills when he runs around, very animated. Today, I heard a strange, high, descending trill that I had never heard him make. It happened twice before I looked over to see what Quark was up to, only to see Blu looking at me- and it was BLU making the noise! I asked him what the heck kind of noise that was, but he just tilted his head and made it again. So of course I grabbed my camera and got him to make it while I whistled to him. It's faint since it was quiet and he was across the room, but toward the middle of the video he really gets going with it. Has anyone heard this noise before? In what context? He was sleeping before and fell asleep afterward... maybe he wasn't all the way awake!