Today, the cats are less fearful of the toy bird I bought them yesterday, although Blackie still keeps a safe distance from it. Yin has become very bold, to the extent that she wanted to pick up the cage and carry the bird to only-she-knows-where. She has grown into this mischievous little "critter", picking up items like socks, ribbons, hair bands and small soft toys between her teeth and relocating them to another place to play with.
The first minute in the first video showed Blackie removing himself to a safer distance when Yin touched the cage and activated the bird. Yin stayed behind to check it out.
The second video showed Blackie returning to the room (you could just make out his legs) but still keeping a safe distance while Yin tried to pick up the cage between her teeth.