I reacted way too fast, with not enough knowledge to Annelein's blog post for today. Her artwork wasn't stolen! She has licensed her artwork through an agent and the agent, obviously, "sold" her wonderful rooster/chicken paintings to the calendar company.
Annelein said that she wished she knew how and where her artwork was going to be used, but that it was wonderful to know that her agent was active on her behalf.
I'm sorry I leaped into the fray so quickly, but my comments about the other two artists still stand.