Singapore 500 Dollars banknote Bird Series

     Singapore 500 Dollars banknote Bird Series (1976-1984)

Obverse : Black-naped Oriole at left, city skyline along bottom, arms at upper right.
Reverse : Oil refinery
Colour: Green
Size of note: 181 mm x 84 mm
First issued on: 1 February 1977

2ND SERIES - THE BIRD SERIES CURRENCY NOTES (1976 - 1984)

 $1      $5      $10      $20      $50      $100      $500      $1000      $10000

The birds depicted on the notes are noted for their strength, adaptability and independence which characterize the young Republic of Singapore with the potential of soaring to greater heights in its progress.
On the front, all notes have the Singapore Arms, a watermark of a lion's head and the signature and seal of Minister for Finance and Chairman of the Board of Commissioners of Currency, Singapore.

Black-naped oriole
The black-naped oriole (Oriolus chinensis) is a bird of the oriole family and is found in many parts of Asia. There are several distinctive populations within wide distribution range of the species and in the past the slender-billed oriole (Oriolus tenuirostris) was included as a subspecies. Unlike the golden oriole which only has a short and narrow eye-stripe, the black-naped oriole has the stripe broadening and joining at the back of the neck. Males and females are very similar although the wing lining of the female is more greenish. The bill is pink and is stouter than in the golden oriole.