Karen's bird boxes 2019

I wondered if this could be the case, I heard a BT calling at 6.30 this morning and I dont usually have them come till around 7 to 7.30, so once I saw the feathers in the box I thought was that the one who was up early calling? I will take a look tonight I am not in till 10.30pm as I am at work, be kind of nice to have Boulder roosting, rather have a nest though  wish he would find a second lady.