Short version: this bloke starts lusting after his wife’s friend, so he kidnaps her and hides her in a cabin in the woods. He also cuts off her tongue, so she can’t call for help. She eventually manages to send word to her friend (aforementioned bloke’s wife) somehow (I think she crocheted it? It’s been a while). Upon learning the news, the wife kills her son, cuts off his head and makes a meat pie with the body. The blokes comes home, eats the pie, and calls for his son. Wife tells him “he’s already in you”. Bloke is confused, so she pulls out the bloody head. Dude flies into rage and starts chasing the wife (and the friend he kidnapped, IIRC the wife brought her home). Eventually they all turn into birds. I forgot which birds the ladies turn into, but the bloke turns into a hoopoe - his helmet becomes the bird’s crest.