"Under worship on their webpage is a man an child and they are dressed as chickens."

Actually, this was the Sunday School, and we don't know the reason for or context surrounding the dress-up. 

"Music says "eclectic" and mentions Prince songs."

Prince was an excellent musician, which is why his work has been turned into a symphony currently being performed by a number of North American orchestras. It doesn't seem a stretch. 

"Christmas Eve celebration mentions the "legend of Jesus' birth" and the "kooky characters" involved."

Do you not agree that there are "legends" that have surrounded the birth of Jesus, such as the date of his birth? Or the setting? In the West, it's a stable; in the East, it's a cave. How about the wise men? Did they arrive on time or much later? While I agree that the word "kooky" may have been an unfortunate word choice, there's nothing in this particular line-up that is flagrantly anti-Christian or Catholic.