If they are then discovered congregating or communicating, they can be arrested.
From the dailyherald.com
The manatees were congregating in the spring that connects to the St Johns River.
From the news-journalonline.com
Sharks, turtles and reef fish can often be found congregating around the atoll.
From the cnn.com
Lice multiplied overnight, congregating in armpits, inside seams, in underwear.
From the kansas.com
Ducks are hardly rare, congregating as they do in large numbers on prairie ponds.
From the chron.com
Large schools of redfish have been congregating in back lakes and on the flats.
From the chron.com
They can find melting water at zero degrees, congregating on roofs and in gutters.
From the delawareonline.com
And they value congregating with others during such deep experiences of closeness.
From the businessweek.com
Obamamaniacs celebrated the election by congregating in Chicago's Grant Park.
From the newsweek.com
More examples
Come together, usually for a purpose; "The crowds congregated in front of the Vatican on Christmas Eve"
(congregating) congregation: the act of congregating
: To collect into an assembly or assemblage; to assemble; to bring into one place, or into a united body; to gather together; to mass; to compact; : To come together; to assemble; to meet; Collected; compact; close