Hvittoppet kakadue, Cacatua alba "Umbrella Cockatoo" by JunCTionS via Flickr, Creative Commons Attribution.

Gultoppet kakadue, Cacatua galerita "Sulphur-crested Cockatoo (Cacatua galerita)" by Lip Kee via Flickr, Creative Commons Attribution ShareAlike.

Detaljert systematikk:

Hvittoppet kakadue, Cacatua alba

Gultoppet kakadue, Cacatua galerita

U.art Cacatua galerita eleonora (Legg til)
U.art Cacatua galerita fitzroyi (Legg til)
U.art Cacatua galerita galerita (Legg til)
U.art Cacatua galerita triton (Legg til)

U.art Cacatua leadbeateri leadbeateri (Legg til)
U.art Cacatua leadbeateri mollis (Legg til)

U.art Cacatua sulphurea abbotti (Legg til)
U.art Cacatua sulphurea citrinocristata (Legg til)
U.art Cacatua sulphurea parvula (Legg til)
U.art Cacatua sulphurea sulphurea (Legg til)