25. Nov. loth. Age, i6 months 
and 10 days, last feathers 
of first eclipse on the back 
of head and neck. 
29. Feb. 26th. Age, 19 months 
and ,26 days. 
33. July loth. Age, 24 months 
and 10 days. 
EIDER DUCK, YOUNG MALES, BACKS. 
End of his second and part of his third year. 
26. Nov. i8th. Age, 16 months 27. 
and 18 days. 
30. March 22nd. Age, 20months 31. 
and 22 days. 
34. July loth. Age, 24 months 35. 
and 10 days. 
Dec. I2th. Age, 17 months 28. 
and 12 days. 
April 13th. Age, 21 months 
and 13 days. 32. 
Aug 30th. Age, 25 months 
and 30 days. Second full 36. 
eclipse. 
Feb. 8th. Age, 19 months 
and 8 days ; 2nd winter 
plumage complete. 
June 1st. Age, 23 months; 
2nd eclipse commencing. 
Oct. nth. Age, 27 months 
and II days, third winter 
plumage, which is that of 
the adult now commencing. 
