Yes , they did molt this year after the hatching in July and our days start getting shorter at the beginning of september and now they only get about 8 hours a day of light.. poor darlings.
So I guess it has everything to do with that. I am way up in northern mid-western Quebec. Close to James Bay actually so our days are very short but starting tomorrow they will begin to lengthen again.
Thank you for putting me at ease.. I was worried. :)