( ( Many ( forest birds ) ) ( ( have ( ( ( small rounded ) wings ) ( that ( ( are ( good ( for ( quick ( , ( sharp turns ) ) ) ) ) ) ( while ( flying ( among trees ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Many) (NN forest) (NNS birds)) (VP (VBP have) (NP (NP (ADJP (JJ small) (JJ rounded)) (NNS wings)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (JJ good) (PP (IN for) (NP (JJ quick) (, ,) (JJ sharp) (NNS turns)))) (PP (IN while) (S (VP (VBG flying) (PP (IN among) (NP (NNS trees))))))))))) (. .)))
Many forest birds have small rounded wings that are good for quick, sharp turns while flying among trees.
(ROOT (S (NP (NNS People)) (VP (MD can) (VP (VB help) (VP (VB keep) (NP (DT a) (NN forest)) (NP (NP (DT a) (JJ good) (NN place)) (PP (IN for) (NP (NNS birds) (S (VP (TO to) (VP (VB live) (PP (IN by) (S (VP (VBG preventing) (NP (ADJP (RB too) (JJ many)) (NNS trees)) (PP (IN from) (S (VP (VBG being) (VP (VBN cut) (PRT (RP down)))))))))))))))))) (. .)))