TPC, do you think then, that Ivy has had more "say" in nest location than Princess?
With Trey, they (Princess and Trey) always spent alot of time on the east side of the building. Ivy doesn't seem to hang out there much - top of the building and on the west are his sides. As for who chooses, its the males who make most of the scrapes and then the women choose from among them.
T-Rex hatched in the box but nested at least once on the nestledge with Madame and that's where Trey hatched.
Trey dragged Madame there once in the two years he nested with her and then three times with Princess in six years they were together
Ivy has been with Princess for two years and they have used the nestbox both years
Of the 22 actual nestings at the Radisson, only 6 have been on the nestledge ...