My guess is somehow there are some attractive mineral(s) in that strip of road. Either laid down when the road was constructed, or deposited by some other mechanism.
Is it a paved or dirt road?
Is there a spring nearby that could transport some dissolved mineral(s) to that spot?
Is it low spot where runoff from a nearby source could replenish the minerals over time?
Or a low spot where groundwater brings dissolved minerals up through cracks in the road, and as the puddle dries out the minerals are deposited?
I can't think what else it could be
> On Mar 8, 2025, at 9:55 AM, 'Alex Barker' via Maine birds <maine-birds@googlegroups.com> wrote:
>
> Can someone help me solve a mystery? For as long as I have lived on this rural/suburban road (34 years) I have frequently observed a large murder of crows congregating at a particular spot that spans the width of the road and maybe 10 feet in length. They seem to be eating something, but I can see nothing at that place in the road that looks any different from any other place in the road, certainly nothing that looks remotely edible. I see them at all seasons, maybe not daily but several times a week.
>
> Any ideas?
>
> Mary Lou in Sullivan
>
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