Determinant Nesters
Pheasants will have only 1 brood per year, but if their nest or eggs are destroyed, they will try, try and try again to be successful. Nesting takes a lot of energy and with each re-nest the clutch size is decreased.
Eventually, a hens energy reserves are exhausted or not enough time remains during the nesting season for a hen to successfully hatch a nest and she will give up. Hen success averages around 50% in areas without much nesting cover and more than 70% in areas where there is a good amount of nesting cover.