PLUMAGES OF THE LONG-TAILED DUCK. 
Adult Males and Immature and Adult Females. 
1. Adult male ; changiag from winter to 
summer plumage. Stromness, Orkneya. 
April 3rd, 1886. 
5. Adult male ; changing from summer to 
winter plumage. North Iceland. Oct. 
10th, 1911. 
9. Adult female ; winter plumage. 
Ness, Forfar. Jan.. 1883. 
Buddoa 
2. Adult male; changing from winter to sum- 3. Adult male; full summer plumage. Loch 
mer plumage. Locli Stennis, Orkneys. Stennis. June 25th, 1886. 
April I5th, 1886. 
6. Adult male ; full winter plumage. Little 7. Adult male ; full winter plumage (very- 
Ferry, Sutherland. Dec. 19th, 1885. grey type). Graemsay, Orkneys. Dec. 
20th, 1885. 
10. Adult female ; winter plumage. 
Little, Orkneys. Feb., 1886. 
Reisa 11. Adult female : full summer plumage. Loch 
Stennis, Orkneys. May 2nd, 1886. 
1. Adult male; summer plumage, somewhat 
faded. Loch Stennis. July 3rd, 1886. 
8. Immature female. Graemsay, Orkneys. 
Mar. 30th. 1886. Age 8 months. 
12. Immature female : plumage much faded. 
Holsteenborg, Greenland. Aug, 11th, 1909. 
Age, 12 months and 11 days. 
