Birds generally have life-histories that can be placed on a fast-slow continuum. Species with fast life-histories have shorter life spans while…

Birds generally have life-histories that can be placed on a fast-slow continuum. Species with fast life-histories have shorter life spans while species with slow life-histories have longer life spans. With this in mind, what contributes more to population growth for species found on each end of this spectrum, adult survival or annual fecundity, and why?