PB, YOU ARE SURELY A BEAUTIFUL BIRD, BUT YOU MAY BE A LITTLE GIRL.
MALE COCKATIELS HEADS ARE VERY YELLOW.

http://petoftheday.com/archive/2004/November/02.html

TWEETER WAS PET OF THE DAY LAST NOVEMBER 2,
HIS HEAD IS VERY YELLOW.

NO MATTER, PB, YOU ARE A WONDERFUL AND FUN LOVING BIRD.
HAVE A GREAT "PET OF THE DAY".