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