Hi All, first time poster and all that. I built a nest box a few months ago and stuck it on a east facing wall of my house. After a while two blue tits made it their home and, until a few days ago, it was very active. I guess it was nest building phase first then for a few weeks one or both were constantly in and out with food in their beaks, every couple or few minutes and virtually all day. Some sparrows and a magpie have shown a bit of interest in the box during this time but I managed to shoo them off. The blue tits always came back but over the last few days the box has become inactive. I'm currently looking out of the window at it and have realised it's been in full sun since about 7am (now 10.30am) and will be for another few hours, perhaps until about 2pm. I fear I've put it in the wrong place and it's become too hot, as we've had this corresponding heatwave and it's been about +25⁰C here since last week. The hole is facing directly east but the southern side is in direct sunlight for the above time. There are no dead chicks below the box, or any other debris for that matter. I've only seen one bird go in over the last few days and it was just in and out quickly, but I think it was a sparrow.
I was wondering if I should take a peek through the hole or maybe take a photo through it with my phone. Seems like the advice might be to just leave it until October and have a look then but wanted to check. Was also wondering if I did clear it out and move it now to somewhere with more shade would anything be able to nest in it again this year?