( ( ( Waterfowl , ) ( ( ( large ( and ( small mammals ) ) ) and ) birds ) ) . )
(ROOT (NP (NP (NNP Waterfowl)) (, ,) (NP (NP (JJ large) (CC and) (JJ small) (NNS mammals)) (CC and) (NP (NNS birds))) (. .)))
Waterfowl, large and small mammals and 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)))) (. .)))