I think the doves are nesting in the wildlife window's nesting space. My key pieces of evidence: 1. Yesterday I saw a "changing of the guard" where one arrived and took the other one's place 2. We've been having (at last) some truly torrential rains here and it seems that at least one of the doves stayed with the nest all through the stormy night. This morning it was clearly occupied by one very very wet bird.
I am sorely tempted to open the window and peek, but I don't want to disturb them. It's a little odd to watch them getting soaked when five inches away, on this side of the glass, everything is (relatively) dry. But, while I might in fact peek in once there are baby birds, I hereby publicly state my commitment to resist the temptation to invite any of them inside.
This is a picture of mama or papa bird's tail with a reflection of my hand in the window glass...not my finest photographic moment.
Oh! And the bulbuls are still here too, but they have never seemed interested in that nesting spot. The two species actually just seem to ignore one another (typical urbanites).