Anyway, it doesn't seem like there would be much of sustenance in the above shot. But there is, although few animals could successfully exploit such a niche. This Horned Lark, fat and all afluff, was feeding on the grasses springing from that crack in the asphalt between it and the snow. The aforementioned Sporobolus grasses had found a home in this fissure, and the lark was gobbling down their fruit.
In the relatively brief period that I watched these larks and their companions, scads of tiny seeds were plucked and consumed. Grass seed is tough stuff, and some of those grains are destined to run through the larks' digestive tracts intact. They'll be expelled somewhere else, maybe near, maybe far.
Horned Larks have been harvesting grass seed for eons, and play a valuable role in dispersing native plants.