Complex sentence: It nests in high trees or on rocky cliffs, or if these are not available on high trees or even cacti, though if no appropriate high place is available this species will nest in bushes or even on the ground.
Split into simpler sentences: It nests in high trees or on rocky cliffs, or if these are not available on high trees or even cacti. If no appropriate high place is available this species will nest in bushes or even on the ground.