You would have difficulty finding a more chivalrous bird than a penguin. When a male penguin wants to court a mate, he sifts through beach pebbles until he finds the smoothest, kinda flat one and presents it to her (like a very sensible engagement ring). They add the engagement stone to their nest (that’s the sensible bit) and wait for eggs.
More chivalry: the male (and female) Gentoos are very attentive parents; they have long lasting bonds with their chicks.
Not really chivalry, but adds to the awesomeness: Gentoos are the fastest underwater swimming bird, with top speeds up to 22 mph.
They also enjoy hockey.