It's that time of year. The best time of year for finding rarities along southern Lake Michigan. You've gotten a taste of something a lot of fun (i.e. a Pomarine Jaeger), and you know that more can be found. And it feels like it's close. And then this flies through your bin field at 3 Oaks.
Pied Water-tyrant? Some kind of Asian Swallow? Unfortunately it quickly became clear that it had the identical size, shape, and flight style to the flock of Tree Swallows foraging over the ponds. Unlike gulls and waterfowl that seem to act aggressively to birds that stand out to the eye, I didn't see any of the other swallows make passes at it.
I actually got the auto-focus to lock on briefly for this shot.
All the rest are manual focus.