reading the signal…
Signals / Object / Street-level imagery
in Gloucester, MA·counted·131 all time
A seabird colony features many nesting birds gathered on rocky cliffs, ledges, or coastal islands.
Counted, not streamed: Seabird Colony 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.