of its food, the loss of nesting sites and competition for the same, and disturbance during the breeding season.
Moreover, the chicks suffer a high rate of accidental falls to the ground when they begin to venture outside the nest; as they are not yet able to fly they are easy prey for their predators. They may also be injured or even killed by these falls as some nests are situated at a height of over 75 m; the high temperature inside the nests, competition for the food brought by their parents, and a scarcity of safe places to perch also contribute towards the risk of falls.