After they've entered the park and walked some distance down a path, she'll (gently, doing her best to not draw blood) peck at his ear and push at his head with her beak, trying to direct him off the path and to a fairly hidden bench amidst some trees and bushes. Sometimes there are couples there, but when she flew over it earlier there was none, and it seems like the wrong time of the night for a new one to arrive.