The nose is located above the upper beak. No feathers cover this area
of a budgie's face. Cere (2) is the scientific name
for the waxlike skin that covers the area above the beak. Male budgies
of most colour varieties have blue ceres, female birds brown ones. Close
to the middle of the left and right part of the cere there is a nostril
(3) on each side. Due to the sex-referred colour of the cere it is
regarded as a secondary sex characteristic of the
budgies.
Healthy birds show a flat and smooth (males) or a bit rough (females
in breeding condition) cere. If a hen's cere becomes too crusty,
vets call this phenomenon a hyperkeratosis (see
photo on the right). In some cases such excrescences have to be
medically treated by a vet.
Injuries of the cere or the nosec an occur due to different causes. In most cases they can be dangerous and it is necessary to immediately treat them with iron chloride or something comparable to save the bird from bleeding to death.
Link tip: Do you want to discuss with experts and other bird owners about your bird's health? Then please feel free to visit the English forum 
of 
. Of course you will meet me there, too. My nickname is "Feenseeschwalbe".
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