Mystery Eggs on Glass

An array of tiny eggs appeared on the outside of our bedroom window:

Insect eggs on glass - 2017-09-17
Insect eggs on glass – 2017-09-17

The patch measures 12 mm across and 14 mm tall. From across the room, it looks like a smudge, but it consists of hundreds of eggs, each on a tiny stalk glued to the glass:

IMG_20170919 vs 0917- Insect eggs on glass
IMG_20170919 vs 0917- Insect eggs on glass

The bottom image is two days later than the top one, both are scaled to about the same size and contrast. The critters look about the same, although I think the lines have more prominent ripples or bumps.

We have no idea what they’ll turn into, but they certainly look like they have two eyes and wings …