All my guineas of both genders were taken. They actually held on for a couple years and had multiple batches of babies, but as indicated by others, lots of predators take them; coyotes, fox, raccoons, mink, bobcats, hawks, owls, weasels, etc. We do not have many turkeys either, and other ground nesting birds are equally scarce. Since wood ducks nest in tree holes, they have fared better.
