. ▁▁ ▁She ▁▁ ▁received ▁an ▁honor ary ▁Doctor ▁of ▁Science ▁degree ▁from ▁Mar ist ▁College ▁in ▁ 2 0 0 6 . ▁ ▁References ▁▁ ▁R alls , ▁K atherine . ▁" Con serv ation ▁for ▁the ▁Tw enty - First ▁Century ." ▁Science ▁ 2 4 7 . 4 9 3 9 ▁( 1 9 9 0 ): ▁ 2 2 4 . ▁Academ ic ▁One File . ▁Web . ▁ 1 8 ▁Oct . ▁ 2 0 1 6 . ▁ ▁Pear l , ▁Mary ▁C ., ▁and ▁Paul ▁R ode wald . ▁" The ▁Exp end able ▁Future : ▁U . S . ▁Polit ics ▁and ▁the ▁Prote ction ▁of ▁Bi ological ▁D iversity ." ▁E col ogy ▁ 7 2 . 5 ▁( 1 9 9 1 ): ▁ 1 9 0 5 + . ▁Academ ic ▁One File . ▁Web . ▁ 1 8 ▁Oct . ▁ 2 0 1 6 ▁ ▁Category : L iving ▁people ▁Category : 2 1 st - century ▁American ▁bi olog ists ▁Category : 1 9 5 0 ▁birth s ▁Category : Bro ok lyn ▁College ▁fac ulty <0x0A> </s> ▁The ▁ant pip its , ▁C ory th op is , ▁are ▁a ▁genus ▁of ▁South ▁American ▁birds ▁in ▁the ▁t yr ant ▁fly catch er ▁family ▁Ty ran n idae . ▁These ▁are ▁long ▁le gg ed ▁species ▁that ▁spend ▁most ▁of ▁the ▁time ▁on ▁the ▁ground . ▁▁ ▁The ▁genus ▁contains ▁two ▁species : ▁ ▁References ▁▁▁ ▁Category :