Thanks all. Here’s an update: she started incubating the day she laid the last egg (the 5th one). I’m planning to install a nest cam today so wish me luck…… I’m afraid I might damage the eggs or spook them off but it went well last year.
Here’s a pic of the 5 white bluebird eggs that I took a couple days ago. The lighting is different this time and they look more white to me.