I'm sure I posted about discovering they snore.

I had Ruffles sitting on a clutch in the house nest box. The nest box is about five metres from my bed. It's incredibly quiet here at night. I had been timing her turning her eggs and eventually fell asleep, pen in hand.
Something woke me and I could hear a strange sound coming from the living space. I though maybe there was a wild boar outside grunting. Got out of bed and checked outside. Nothing. Went back to bed and as I was about to fall asleep the sound started up again.
Sounds like that, dripping taps are a good example, have to be discovered before further sleep is possible. I lay in bed trying to locate the sound. I didn't turn the light on this time when I got up to follow the sound. I got as far as the computer chair, a metre or so from the nest box and the sound was definitely coming from the nest box. Of course it stopped as I tried to get closer as Ruffles woke up.
Back to bed. I lay there listening and after a while the sound started up again. This time I just called to Ruffles and told her she was snoring. Ruffles did a bit of egg rearranging and I went off to sleep quietly chuckling to myself. I told all the others the next day that Ruffles snores so loudly she woke me up.

Tackle snores as well but she's more of a raspy whistle.