It's been five days since these dear boys moved in. The first couple of days they were little scaredy cats, but they've since decided that there's nothing to fear, and now are quite comfortable with us.
Bart was the first to purr. On his second day with us, the excitement of lunch triggered his tiny motor and he hummed while he dined. Later that day I found his "on" button while giving his chin some scratches.
It took a little longer for Fielding. He tried on day three, but those were false starts. Day four, while cuddled in a ball with his brother on my lap, he turned it on, and his purr was strong.
They nap and have their meals in their cage, but when I go in the craft room and visit them, I spring them from the cage and let them explore. They're too tiny to roam on their own, they barely weigh a pound, so their outings are all supervised.
I do a lot of educating on the subject of what's a cat toy and what's a craft supply. They are bright, but they are kittens, so they struggle with these lessons.