From Dave Madonna, who is at the Valmont Plant, and who does a great job of watching over the owls:
Thanks for your support and concern for the Valmont GHO's. The adult female is currently perched outside the nest just out of the camera's view. Observing her with binoculars from about 100 yards away, she appears to have dried blood on her face. The adult male is roosting in a favorite spot directly below the nest and he appears to be healthy. There has been a third GHO, probably female based on size, in the immediate area for over a week. I am speculating that the nesting female got into a territorial fight with the intruder last night. There has been no sign of the third owl today. Hopefully, the female's injuries are superficial and she will recover quickly.
GHO's have been nesting at the Valmont power plant for over 30 years. In the 13 years I have been watching them, only 1 nest has failed, although there has been plenty of excitement. They are remarkably adaptable. The nest cameras give us incredible insight into the challenges they face. Their three eggs are almost certainly nonviable after being exposed for so long. They may possibly lay a second clutch in two weeks or so like they did several years ago.
Be assured that we are keeping a close watch on the owls. I will submit another post if anything significant occurs here. Thanks again for your support.
Dave Madonna