Oak titmouseOcellated turkeyOlive woodpeckerOne colored becardOpenbill storkOrange bellied leafbirdOrange breasted bush shrikeOrange breasted falconOrange chinned parakeet / parrotOrange collared manakinOrange crowned orioleOrange fronted conureOrange fronted yellow finchOrange headed ground thrushOrange headed thrushOrange winged amazon parrotOrchard orioleOriental darterOriental magpie robinOriental pied hornbillOriental roller pigeonOriental turtle doveOriental white eyeOrinoco gooseOriolesOropendolaOrphean warblerOspreyOstrichOwlsOxpeckersOystercatcher