Do you have any pictures of the inhabitants, as there was some debate about to which armadillo species they actually belong...
I had uploaded a time ago already one in the Berkenhof Gallery : http://www.zoochat.com/1860/armadillo-id-340040/?highlight=armadillo
That is also what the person who delivered these animals says, but Chaetophractus vellerosus is what zoochatters said about the other picture And it certainly looks more like vellerosus to me at the picture from 2,5 years ago... So I was wondering whether you do not have a recent picture, to rule out that they were just juvenile 2,5 years ago...
In March 2016 I only saw the animals at the back of the enclosure and it was to dark to take pictures but next time I will try to get some new photos.