Bivouac (ants)

During what is called the migratory phase, the ants set up bivouacs at new sites each night.

Thousands of larvae are located near the centre with the queen, and workers are responsible for feeding them.

Larger workers also serve as porters, carrying larvae to new bivouacs.

In the morning, the bivouac dissolves into raiding columns that form a fan-shaped front.

Smaller workers lead the column, while larger, formidable soldiers protect the flanks.