We had a revelation on the Kitten site last night. John, the foster dad, was checking on the kittens and giving Grant, the tabby, a supplemental feed (more about that later) when he was demonstrating how some of the kittens were happier to be picked up than others. Adam, with the Siamese markings is very relaxed at being picked up. But it was while handling Adam that John discovered that Adam was a madam!
At the young age these kittens are it was difficult to 'sex' them and what had looked like boy bits, where actually tufts of fur hiding girl bits. Adam is now being nicknamed 'Addie', and seems now the worse for the experience of having a sex change.
As to Grant, viewers and John had noticed that he seemed to be breathing faster than the others. That was a concern but not a worry, until he wasn't putting on weight and hence the need for extra feeding. It seems that Grant has a 'flat chest' rather than the oval one that cats normally have and was therefore finding it difficult to breathe. It's likely that this can be treated when he's a bit older, but for now it means that he may get tired quicker than the others. He's certainly feisty though and has now started to put some weight on.
The Kitten Cam is the best soap opera on the Internet at the moment.