Our kittens now have the run of the house. Generally speaking things are going quite smoothly, although they have displayed a fondness for chewing through small wires. This meant that I had to spend some time jacketing all of the wires on all of the wall warts in the office/studio with plastic tubing so that their teething activities wouldn’t sever the power cords of the wi-fi router, the Ethernet switches, etc.
All of the adult cats have accepted their presence gracefully. Zed and Alfred have been more or less indifferent about them since they spotted them; now Zed plays with them occasionally and Alfred grooms them when they’re within reach. (Alfred grooms anyone when they’re within reach.) Edwin felt compelled to hiss and slap them around a bit for a couple of days, but it didn’t take him long to realize that they were more entertaining than threatening. Shortly after that I think he realized that they have more energy than he does. Madeline seems to think that they still need the occasional whack on the head but maybe she’s just trying to take on the role of the responsible adult.
I put up a number of photos here. Many of them were taken while they were still confined to the kitchen. They’re not easy photographic subjects; when they’re not sleeping, they’re moving. Video does a better job of portraying them: