TAPACHULA, Mexico — It was only last week that a caravan with thousands of Central American migrants hunkered down for the night here in Tapachula, in southern Mexico.

Days later, a new group numbering in the hundreds arrived, fanning out across the central plaza and surrounding sidewalks.

Now, two more caravans are on their way, as well.

The fact that the first of these caravans was able to move from Honduras into Guatemala and then into Mexico is inspiring other migrants to travel in large groups, reversing the long-established logic of Central American migration to the United States: Rather than trying to travel undetected, some migrants are trading invisibility for safety in numbers.

“Everybody wants to form another caravan,” Tony David Gálvez, 22, a Honduran farmworker, said Tuesday as he rested in Tapachula’s central plaza after walking into the city with hundreds of other migrants, part of the second caravan to arrive here this month.