If you can't get your hands on 1-pound-ish hens, you still can make this recipe. The marinade is quite a lot to take care of bigger birds up to 1 1/2 pounds to 1 3/4 pounds each. However, the roasting time might be a bit longer. You will know that they are fully roasted when a thermometer registers 180 F degrees when inserted into one of the hens.