PLUMAGES OF THE LONG-TAILED DUCK. 
Immature Males, from first plumage to maturity. 
Young male. Iceland. 
Age, 2 months. 
Sept. Ist, 1909. 
Immature male. Leith, N.B. Nov. 3rd, 
1887. Age, 4 months and 3 days. 
Immature male. Husavik, Iceland. May 
10th, 1911. Age, 10 months and 10 days 
2. Immature male. Christianssand, Norway. 
Oct. 19th, 1905. Age, 3 months and 19 days. 
6. Immature male. Fort George, Nairn. 
Dec. Ist, 1890. Age, 5 months. 
10. Immature male. Husavik, Iceland. Aug. 
2nd, 1909. Age, 13 months and 2 days. 
3. Immature male. Leith, N.B. Nov. 20th, 
1887. Age, 4 months and 20 days. 
7. Immature male. Lynoes, Norway. Dec. 
2nd, 1903. Age, 5 months and 2 days. 
11. Immature male. Husavik, Iceland. Sept. 
14th, 1911. Age, 14 months and 14 days. 
4. Immature male. Leith, N.B. Nov. 30th, 
1887. Age, 0 months. 
8. Adult male. Graemsay, Orkneys. Feb. 
2nd, 1889. 
Note.— After No. 11, the bird will in the next 
month pass rapidly into adult plumage, as 
represented in Fig. 8. 
