Northern Bald Ibis: breeding
Nest building starts in February and first eggs are laid in March-April. Clutch size 2-5 eggs and incubation takes 28 days. The chicks fledge at 43-47 days. Both parents brood and feed the chicks. The offspring and parents retain close contact. During autumn and winter the contact is reduced but the intensity of the parent-offspring relationship again increases at the beginning of the next breeding season.
The NBI is a colonial breeder nesting on cliff ledges and will also use artificial ledges. However the size and shape and covering of the ledges seem to be crucial. Nests are built of short branches and are compact and can be thick as 15-25cm. The inner layer is made of softer material as dry grass.