( ( ( Waterfowl , ) ( ( ( large ( and ( small mammals ) ) ) , ) birds ) ) . )
(ROOT (NP (NP (NNP Waterfowl)) (, ,) (NP (NP (JJ large) (CC and) (JJ small) (NNS mammals)) (, ,) (NP (NNS birds))) (. .)))
Waterfowl, large and small mammals, birds.
(ROOT (S (NP (JJ Placental) (NNS mammals)) (VP (VBP give) (NP (NN birth)) (PP (TO to) (NP (ADJP (RB relatively) (JJ large)) (NNS fetuses)))) (. .)))