On the nest, the sitting guinea hen will flare her wings, fluff out as big as she can make herself, thrust her beak forward, ready to strike out, and hiss.

In the nest, unhatched chicks communicate with clicking sounds or vibrations to coordinate development and hatching. The mother makes quiet, low sounds to communicate with the developing chicks.

In ___________ breeds, developing chicks tell the sitting hen when they need to be turned (Robert Lederer, Beaks, Bones and Bird Songs).

After her keets have hatched, the mother repeats her soft clucks as she walks, reminding her keets to keep up and stay close. Her calls rise to a more rapid, high-pitched, excited sound with whistling notes when she spots food.

As they range, the keets make a continuous peeping chatter, which rises to a rapid trill when they encounter food. When separated from the others, keets make a very loud, distressed, constant peeping sound until reunited with their mom.