I got to watch two feedings from the female, and also got to see Bobby visit the nest and a few perches in Washington Square this evening.
It looks like the last egg will not be hatching at Washington Square. While this is better than last year, when two eggs didn't hatch and the only eyass had issues with feather growth, it brings into question the health of the environment around NYU. While the park has removed rodenticides, they are still used by the University and other building owners around the park. While many of us has focused on hawk deaths due to secondary rodenticides, fertility problems are also a major problem with these poisons. I'm afraid we might be seeing this issue at Washington Square Park.
Update 4-26-17: The youngest eyass on the nest died within the last 48 hours. Cause of death unknown.