Vogelliste
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
| Deutscher Name | Wissenschaftlicher Name | Englischer Name | |
| Odinshühnchen | Phalaropus lobatus | Red-necked Phalarope | |
| Ohrengeier | Torgos negevensis | Arabian Lappet-faced Vulture | |
| Ohrengeier /2 | Torgos tracheliotus | Lappet-faced Vulture | |
| Ohrenlerche | Eremophila alpestris | Horned Lark | |
| Ohrenscharbe | Phalacrocorax auritus | Double-crested Cormorant | |
| Ohrentaucher | Podiceps auritus | Slovanian Grebe | |
| Olivenspötter | Hippolais olivetorum | Olive-tree Warbler | |
| Orientbrachschwalbe | Glareola maldivarum | Oriental Pratincole | |
| Orientseeschwalbe | Sterna saundersi | Saunders's Tern | |
| Orientturteltaube | Streptopelia orientalis | Oriental Turtle Dove | |
| Orpheusgrasmücke | Sylvia hortensis | Orphean Warbler | |
| Orpheusspötter | Hippolais polyglotta | Melodious Warbler | |
| Ortolan | Emberiza hortulana | Ortolan Bunting | |