The act of parturition in rabbits is known as "kindling". This is the process of giving birth to baby rabbits, also known as kits. It involves the mother rabbit going into labor and delivering the kits. Kindling usually takes place in a nesting box, where the mother rabbit can safely deliver and care for her kits. It is important for rabbit breeders to provide a clean and comfortable nesting area for their does, as well as monitor them during kindling to ensure the safety and health of the mother and her offspring.