Carter and Stein 



Chapter9 



Molts and Plumages 



Figure 3 Ventral plumage differences between adult Marbled Murrelets undergoing pre- 

 basic molt (top) and recentJy-fledged juveniles (bottom). Note the "blotchy" appearance of 

 adult birds versus the "speckled" appearance of juveniles. Collection dates of adult 

 specimens: 10 July 1965, 11 August 1964, 11 September 1969. Collection dates of juvenile 

 specimens: 1 8 July 1 920, 8 August 1 961 , 24 September 1 924. Specimens are housed at the 

 Royal British Columbia Museum, Victoria, British Columbia. Photo taken by J.L Stein. 



USDA Forest Service Gen. Tech. Rep. PSW-152. 1995. 



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