▁species ▁introduced ▁to ▁Leb anon ▁as ▁a ▁consequence , ▁direct ▁or ▁indirect , ▁of ▁human ▁actions ▁( Ex ) ▁Ext ir p ated ▁- ▁a ▁species ▁once ▁naturally ▁occurr ing ▁in ▁Leb anon ▁but ▁no ▁longer ▁so ▁ ▁Gre bes ▁Order : ▁Pod icip ed iformes Family : ▁Pod icip ed idae ▁ ▁Gre bes ▁are ▁small ▁to ▁medium - large ▁fresh water ▁div ing ▁birds . ▁They ▁have ▁lo bed ▁to es ▁and ▁are ▁excellent ▁sw imm ers ▁and ▁divers . ▁However , ▁they ▁have ▁their ▁feet ▁placed ▁far ▁back ▁on ▁the ▁body , ▁making ▁them ▁quite ▁ung ain ly ▁on ▁land . ▁There ▁are ▁five ▁species ▁which ▁have ▁been ▁recorded ▁in ▁Leb anon . ▁ ▁Little ▁gre be , ▁T ach y b apt us ▁r uf ic oll is ▁Red - ne ck ed ▁gre be , ▁Pod ice ps ▁gr is eg ena ▁( A ) ▁Horn ed ▁gre be , ▁Pod ice ps ▁aur it us ▁( A ) ▁Great ▁cr ested ▁gre be , ▁Pod ice ps ▁crist atus ▁Black - ne ck ed ▁gre be , ▁Pod ice ps ▁n ig ric oll is ▁ ▁Fl aming os ▁Order : ▁Pho en ic opter iformes Family : ▁Pho en ic opter idae ▁ ▁Fl aming os ▁are ▁gre g ari ous ▁w ading ▁birds , ▁usually ▁ ▁tall , ▁found ▁in ▁both ▁the ▁Western ▁and ▁Eastern ▁Hem is pher es . ▁Fl aming os ▁filter - feed ▁on ▁shell fish ▁and ▁alg ae . ▁Their ▁odd