List of Tables 



Table 1 . Documented use of streams during the breeding season by harlequin 



ducks in the Pacific population in the coterminus United States 2 



Table 2. Number of documented and potential breeding streams where harlequin 



ducks have been observed in the Rocky Mountains 4 



Table 3. Primary land management status of known and probable harlequin duck 



breeding streams in the Rocky Mountains 7 



Table 4. Estimated United States harlequin duck breeding population in the 



Pacific Northwest and Rocky Mountains 8 



Table 5. Rocky Mountain streams historically used by harlequin ducks where 



no use has been documented within the last 5 years 8 



Appendix A, Table 1. Idaho harlequin duck breeding and probable breeding 



occurrences, 1995 27 



Appendix A, Table 2. Idaho streams where harlequin ducks have been observed or 



reported, but breeding status is unknown 29 



Appendix A, Table 3. Partial list of potential harlequin duck breeding streams in Idaho.... 31 



Appendix B, Table 1. Montana harlequin duck breeding and probable breeding 



occurrences, 1 995 32 



Appendix B, Table 2. Montana streams where harlequin ducks have been observed or 



reported, but breeding status is unknown 36 



Appendix B, Table 3. Partial list of potential harlequin duck breeding streams in 



Montana 28 



Appendix C, Table 1. Wyoming harlequin duck breeding and probable breeding 



occurrences, 1 995 39 



Appendix C, Table 2. Wyoming streams where harlequin ducks have been observed or 



reported, but breeding status is unknown 40 



Appendix C, Table 3. Partial list of potential harlequin duck breeding streams in 



Wyoming 41 



Appendix D, Table 1. Minimum number harlequin duck pairs on streams monitored in 



Idaho, 1989-1995 43 



Appendix D, Table 2. Minimum number harlequin duck pairs on streams monitored in 



iii 



