reading the signal…
Signals / Object / Street-level imagery
in San Diego, CA·counted·209 all time
A small falcon with pointed wings, hovering flight, and patterned brown or gray plumage.
Counted, not streamed: Kestrel has no time series, so it is read as a footprint across places. All-time count by city.
Things that physically exist: street furniture, signs, buildings. All-time counts.