As I said, there is lots of personal variation in the vary large spectrum of Christian belief. I’ve come across Christians who are keeping Jewish dietary law, and saying that Jesus’s “nothing that goes into a man can render him unclean,” with St. John’s comment, “Thus He declared all foods clean,” somehow didn’t apply to them.
My understanding of the food laws is that scavengers aren't for us to consume. They are considered unclean. Acts 10:11-16 tells us of God showing Peter unclean foods and saying, "Rise Peter; kill and eat."
This was to show Peter that gentiles were not unclean. He didn't mean for Peter to actually eat the unclean food. While Peter was questioning what the vision meant the "vessel was received up again into heaven." He wasn't meant to eat it.
It isn't a sin to eat those foods but God tells us not to eat them for our health. Scavengers are to clean the earth and if we consume them we consume the poisons they absorbed. For instance, swine - they don't sweat so all the toxins remain in their flesh, especially in the fat.
If you aren't Jewish it may just be a personal health decision. Either way, I believe it to be following His wishes.
The Third Sorrowful Mystery — Jesus is Crowned with Thorns