After the female bluebird laid the 4th egg, she started to spend more time on the nest including late in the day and overnight.. She was there at early in the morning, too. All those signs pointed to the start of incubation. She did provide us with a surprise before noon (a good one).
whe she called she twitched at the en of her chirp. I suspect thats whn it was fully laid an she turned to check it out.
TheDragonLake 1 year ago