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Coverts: Small feathers concealing the bases of larger flight feathers, usually on the wings or tail.
Endemic: A species or taxonomic group that is only found in one particular country or geographic area.
Incubation: The act of incubating eggs, that is, keeping them warm so that development is possible.
Mantle: In birds, the wings, shoulder feathers and back, when coloured differently from the rest of the body.