u/Complete-Purchase864

A few weeks ago I decided to turn my empty planter into a bird paradise. I live on the fifth floor and that concrete planter was just staring at me. As you can see in the picture, there’s a bowl of food, a water bath with a fountain, there’s a small bird house on the edge of the planter and I have tried to create some shelter (red box). I saw two crows visit, but they have yet to return.

What can I do to make this more attractive to them? There’s mostly crows, ravens, blackbirds, great and blue tits in my neighborhood. I would love to hear your suggestions!