Michel # 475; Scott # 704b; Stanley Gibbons # 481;
The Ferruginous Duck (Ferruginous Pochard) .
Aythya nyroca.
Color: multicolored
Date of Issue: 05.05.2000
Face Value: 500 AZN
Designer: Kh.Mirzoev
Stamp Size: 42 × 30 mm.
Stamp Quantity: 100 000
Perforation: 12¼:12