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@SzMarsupial @thestarboretum desert ants, so they can't follow a pheromone trail because the sand would blow away. they navigate by a bearing (iirc taken from the sky) and distance, then do a spiral at the end to find the entrance to the ants nest.
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@SzMarsupial @thestarboretum unless you glue stilts to their legs while they're heading back. if you do that they walk too far & miss it.