“I never saw a wild thing feel sorry for itself. A small bird will drop frozen dead from a bough Without ever having felt sorry for itself.”

This quote is said by D.H. Lawrence, and he refers the bird to a person who is very outgoing and wild, and comparing the person to an animal because the person has enjoyed so much out of his/her life, they don't need to reflect on their personality or see who their real friends are, and barely know who he/she is.