In Middlemarch by George Eliot Dorothea Brook's nickname is Dodo.
Or actually to be exact her sister, Celia Brook's nickname for her is Dodo.
Is this an allusion to Dorothea's almost extinct kind?
I am presuming her kind to be the 'Mother Teresa' type; which the book's underlying moral seems to suggest can no longer exist (i.e. good deeds and greater causes are no longer, everyday kindness and little steps are all that can be taken).