Thursday at sea near the coast.
We were headed out by small boat for a swim. Once we had laid anchor and closed the motor we could hear a loud, un-melodic screeching on the cliffs nearby. In the shadow of the headland there was a dark bird flying here and there while another perched quietly nearby. At one point the flyer seemed to land on the other, made some noise and sudden movements, and then flew off again to return to rest nearby.
Ornithological information suggests that the pair were mating. They probably have a nest in a crevice on the cliff side where (up to four) eggs will be deposited, looked after, and hatched. Mom and dad will feed the young with their choice of small birds during the September-October north to south migration season. In November the family will head for Madagascar (6,500 km, 4000 miles) to winter there and return in April to start all over again.