Kon hovered over Gotham at a height he was relatively certain is above the limits of human visual range, even if the human happened to be crouched on top a skyscraper. Flamebird was spending a night in the Fortress med bay; she had taken the brunt of the explosion they had triggered investigating a base some Zod loyalists had left behind. So with his partner out of commission and nothing earth-threatening on the radar, "Nightwing" was more or less free for the night.
The "Nightwing" thing still didn't fit, even after Clark told him about the name's origin. Maybe it was because he had worked with Nightwing. Maybe it was because he knew Dick. He liked to think it was because he respected Dick and felt like he should ask his permission.
He tried not to think about it in terms of the things he'd done in private with Nightwing's "little brother." Things he still wanted to do to him. Maybe even in public.
Thoughts like that, naturally, involved thinking about Tim. Thoughts like that got him using his hearing in a manner that he was fairly certain qualified as stalking. Thoughts like that reminded him just how disturbingly hot it was that the Robin suit sported Kon's old colors now. Thoughts like that ended up with him floating over Gotham at 2am on Thursday morning.
Thoughts like that got him thinking about conversations he needed to have. Like the "Hey Tim, I'm not dead anymore" conversation, or the "You see, the reason I didn't tell you for two months is" conversation. Or the "So, have you been seeing anyone in the past couple of years?" conversation. He really didn't see them going any better than the "Hey, Aunt Martha, I heard Uncle John is dead" conversation. Probably worse, since Tim would be skeptical of his return and was far more likely to carry kryptonite than Aunt Martha.
He really needed to have those conversations. He really needed to see Tim again. He had this mental list of things he wanted to do to make up for lost time: positions, places, outfits. And the list wasn't getting shorter.
He just wasn't sure how to start the conversations. Or what to do if Tim had moved on and wasn't interested anymore: it was only a couple of months for Kon, but it was over 2 years for Tim. So instead of finding Tim and talking, he floated above Gotham in the middle of the night. Somehow, not having those conversations was easier at 2am and 20,000 feet.