Strong and others 



Chapter 32 



Distribution and Population Estimates in Oregon 



Table 1 Marbled Murrelet unweighted population estimates, estimates weighted by km of transect/day (number 

 of observation points for shore surveys), and 95 percent confidence intervals (CI) around un weighted estimates for 

 Marbled Murrelets in Oregon using four methods of estimation 



1 The offshore proportion for shore observations was calculated for birds over 1 km offshore, rather than 500 m as 

 in other cases. The center-south region was combined with center for shore estimates. 



342 



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



