The caterpillars have grown a lot and they were very hungry caterpillars. The last two weeks I had to change their leaves very 2-3 days and the poor bush where I was getting their leaves couldn't cope with it; I had to try to offer them another kind of leaf, which luckely they liked. Now one of them has turned into a crysalid, other two are working on it. I only have two left which are still eating away.
The transformation happened quite quickly. It started making a kind of spider net, then the next morning he has already inside its coocon which lays on this net. The coocon was yellow, then it turned to orange, when I looked at it in the late afternoon it was black!