provided for breeding. If the cage
is very large,
two boxes can be used. More than two boxes
detract or confuse the pair, although the Rotterdam Zoo
has had breeding from a pair with many nest boxes
Breeding success has been attained with an assortment
of wooden nest box sizes.
A rectangular box situated on end is the generally accepted
type. Both open top boxes
and boxes with large
entrance holes, such as 30 cm (12") diameter, are
used by palm cockatoos.
These types allow the birds to drop nesting material
into the box, which is an important breeding
. We recommend that the nest box
between 1 m to 1.3 m (3' to 4') deep.
Any deeper may cause the birds to spend too much time
filling the box with nesting
. Open top boxes, with a minimum 60 cm (2')
of clearance to the top of the cage, have been the most
their own nesting material
from soft branches such
as eucalyptus, bamboo, acacia, and willow. The cockatoos
will splinter the branches and take the pieces into the
nest, as mentioned above.
Branches can be given to the birds year round, but should
at least be provided at the onset of the breeding
and at regular intervals until an egg has been
The birds may become frustrated if there are long periods
when they do not have access to nesting material. In at
least one instance, aggression to the female by the male
was thought to be the result of this situation.
A good rule of thumb is to give the birds new branches
as soon as they finish the previous branches to ensure
they have a constant supply.