18) Bird brings up the end of the line (11) starts with "c"
48)See how the wind blows in youthful activity (3,1,4)................j/k
50)First Lady of the sixties (8,7)....k/l
64)Dodie's play with expensive sea- creature (4,7)........n/o
85) Did Bruce observe this Christie play (1,7,3)...........s
Answers are the name of a physical creature-answers are in alphabetical order, so I,ve given suggested starting letter for name of creature.
Sorry, Jacqueline Kennedy fits the clue and the number of letters, but not the theme of your quiz...unless Jackie Kennedy counts as a creature......which I suppose she was....