( ( Food preferences ) ( ( change ( with ( the season ) ) ) . ) )
(ROOT (S (NP (NNP Food) (NNS preferences)) (VP (VBP change) (PP (IN with) (NP (DT the) (NN season)))) (. .)))
Food preferences change with the season.
(ROOT (S (NP (NP (DT A) (NN change)) (PP (IN of) (NP (NP (NN season)) (CC and) (NP (JJR less) (NN food))))) (ADVP (RB usually)) (VP (VB cause) (S (NP (JJ certain) (NNS animals)) (VP (TO to) (VP (VB migrate))))) (. .)))
A change of season and less food usually cause certain animals to migrate.