Wooden didjeridoos are varieties form 'piped ' eucalyptus branches
('suppressed stems'). 'Termites nest in these malformed branches,
eating the wood from the inside outwards. The species most often
selected for didjeridu tubes in coastal regions of Arnhem Land
include stringy bark (Eucalyptus tetrodonta) and woolybutt (E.
miniata). The River Red gum ( E.camaldulensis) is chosen by north
Australian didjeridu players at places nearer to Katherine and
further south. A didjeridoo at Maningrida was made form a palm,
probably Livistona humilis
Excluding 'instant ' didjeridus, such
as lengths of iron piping or the tailshafts of land-rovers, wooden
instruments seem to more durable than bamboo type has not been
measured; but after finding a hollowed branch, the player may chop
it down, remove the bark covering, smooth the surfaces, whittle the
mouth end, mould beeswax or gum round the rim and have the
instrument ready for testing (with the singer) within a space of few
hours.