Ok, so my silkie Agnes has been on the nest for hours today. Usually doesn't take her that long to lay an egg. She got off when my patting started to bother her, ate and hopped back on. No egg, she's not laid one today, did yesterday though but I collected it soon after. Also not cranky when I pat her. She's making proper 'cluck' noises too, has been the past few days. not the usual long drawn out squawk; it actually sounds like she's saying cluck, cluck, cluck. Is this broody behaviour? I've never had a broody hen before, as I've previously had hybrids who lose interest in their eggs as soon as they're done laying them. I knew with a silkie (and also a young pekin heading into maturity) it was only a matter of time given their reputation.
Edit: I found this vid on youtube, this is what the noise she's been making whilst out with her friends in the garden the past two days, sounds like. https://www.youtube.com/watch?v=cou353pmbS4
That is what my girls do when they are getting ready to start sitting for a hatch. I would expect in the next few days she will start sleeping in the nest, that's when you give her fertile eggs if you want her to hatch, or start locking her away from possible nests if you don't.