I've had a pair of cresteds for a few months now and over the past 4 days I've noticed my female acting odd. In there enclosure is a large section of sphagnum moss about 8"x8"x4"h. Several days ago she dug into it throughout the night and has been chilling in there ever since. Sometimes I can see her head and other times she's completely hidden within her nest. Should I be looking for eggs or worried something is wrong? Both are adults and previous owner said they'd found eggs before.