How common is the practice of sacrificing infants to Others? Craster gave them sheep too... why don't all or most of the wildlings sacrifice livestock too? Would it keep the Others off? Or is Craster a special case? What happened to the axe Mormont gave craster? What do you think happened to Craster's wives? craster was much closer to the Wall than the other wildlings.. shouldn't that have made his interaction with Others all the more scarce? How long since the Rangers knew about this practice?
How common is the practice of sacrificing infants to Others? Don’t know, but probably very uncommon as the other wildlings shun Craster (and our only wildling POV, Varamyr, made no mention of it whatsoever).
Craster gave them sheep too… why don’t all or most of the wildlings sacrifice livestock too? There were human bones found in the mouth of a weirwood at Whitetree, so there probably is some kind of sacrifice going on, just not to the Others.
Would it keep the Others off? Probably not
Or is Craster a special case? Probably
What happened to the axe Mormont gave Craster? No idea, don’t much care, don’t think it matters
What do you think happened to Craster’s wives? The mutineers eventually left and were killed by Coldhands, so the wives are probably still in the keep. Maybe some decided to or were convinced to join Mance’s wildling refugees, or went off to Hardhome with some of the survivors of the attack on the Wall, or joined Tormund’s other group of survivors, but if so they haven’t identified themselves.
Craster was much closer to the Wall than the other wildlings… shouldn’t that have made his interaction with Others all the more scarce? The show scenes where an Other picks up a sacrificed baby are purely show scenes and not in the books. Other than the wives saying that the Others were coming to take Gilly’s baby, there is no in-book proof that the Others ever take any of Craster’s sons and they don’t just die of exposure and/or wild animals. So we don’t know if Craster had any real encounters with the Others before they “woke up” (or however they came back) before the beginning of AGOT. Also, closeness to the Wall probably doesn’t really matter, it’s just the Wall itself the Others can’t cross.
How long since the Rangers knew about this practice? Too long.