it can be whatever you want it to be sport. Point is 3 eggs doesn’t automatically mean a death sentence for one of them. Folks on this thread are concerned the third one is doomed. I’m just sharing that it’s not, it has a fighting chance. The Duke nest produced 3 fledglings in 2009 and 2013. Most years there are only 2 eggs so yeah 3 can and do survive.Not sure what your definition of often is but I think I saw that the success rate of 3 hatchlings making it to fledglings was less than 50%. Could be wrong though.
I hope all 3 survive this year too but keep in mind there are challenges like predation from hawks (see attached video above), owls, crows, raccoons, weather, etc. Many hazards have nothing to do with the parents feeding each chick with enough to survive. Fortunately food sourcing isn’t much of an issue for the duke nest You can see plenty of fish in this nest. Some years there have been multiple turtle shells in the nest, snakes, squirrels, and I’m told one year a cat (with a collar on it). These birds mean business.