It's particularly damaging and insensitive for PETA's Christine Martin to recommend a birth control program for wolves as a way of arguing against aerial wolf-shooting.
In short, the wolves don't need population control, yet homo sapiens would benefit from birth control efforts. Earth to PETA: Free-living wolves are not domesticated dogs in need of vigorous spay-neuter efforts. Also, deer and other animals in nature don't need to be controlled by a species that has such difficulty in controlling itself.
Kindly leave them alone, and offer some peace to the thousands of dogs and cats PETA removes for destruction each year.
Friends of Animals