CHANGES IN THE TAIL FEATHERS OF THE ADOLESCENT LYREBIRD.
The changes which take place in the tail of the male lyrebird as it develops to maturity over a period of 7 to 8 years are attributable both to moulting and to processes whereby certain plain feathers are transformed into filamentaries and medians by growth of the rachis and loss of barbs and barbules.
D000818:Animals; D001717:Birds; D005241:Feathers; D008297:Male; D010827:Physiology
BIRDS; FEATHERS; PHYSIOLOGY