We don't have straw, so I used hay in my nestboxes, and it was really great, edible so if they ate a little it wasn't a huge deal, and it smelt really awesome.... and then they ate all four of their nests.
Yep, it's shavings here in the nestboxes LOL
My mum was going on about using Sphagum (sp?) Moss in the nest boxes, something about it being all natural, soft, and she was sure it would be okay for chickens. I'm not convinced, so it's staying at shavings for now, not that our girls are laying yet, they keep making little nests in the bedding outside the nest boxes, and then leaving them. Oddly, they're making the nests where the wall err leaks LOL, there used to be a doorway, and my mum put down a sill without siliconing under it for one reason or another, and now the snow has come, it has started to leak into the building at that point... OFF TOPIC COMPLETELY, I'm stopping now.