In order to estimate many different colors and how many color-bands per bird are necessary to achieve a certain number of unique color and aluminum band combinations (each allowing its wearer to be distinguished from all other birds), 1 of 2 equations modified for this purpose must be used. These equations are discussed, as well as the rationale behind their use. Two tables are also presented that give a range of totals of unique sets derivable, using varying numbers of different colors and varying numbers of color-bands per bird. A simple fortran program, and the logic behind it, are presented and discussed. Using this program (modified as required in special cases) plus a machine-language program formulated for the specific computer used, the researcher can easily generate the required color-band sets. The final output can be in the form of 1 punch-card for each set, or a printer-listing of all sets; the print-out can be in multiple form, with 1 set for field use.