| Subject | English | German |
| ornit. | Argentina ruddy duck | Argentinische Ruderente (Oxyura vittata) |
| ornit. | Argentina ruddy duck | Bindenruderente (Oxyura vittata) |
| ornit. | ruddy-breasted crake | Zimtsumpfhuhn (Corethrura fusca, Porzana fusca) |
| gen. | Ruddy-breasted Crake | Zimtsumpfhuhn |
| ornit. | ruddy-breasted seedeater | Zwergpfäffchen (Sporophila minuta) |
| gen. | ruddy-capped nightingale-thrush Catharus frantzii | Bergmusendrossel |
| gen. | ruddy-cheeked | rotgesichtig |
| ornit. | ruddy crake | Rubinralle (Laterallus ruber, Rufirallus ruber) |
| ornit. | ruddy crake | Zimtsumpfhuhn (Corethrura fusca, Porzana fusca) |
| gen. | Ruddy Crake | Rubinralle |
| ornit. | ruddy creeper | Kappenbaumsteiger (Dendrocincla homochroa) |
| gen. | ruddy darter | Blutrote Heidelibelle |
| nat.res. | ruddy duck | Schwarzkopfruderente (Oxyura jamaicensis) |
| gen. | ruddy duck Oxyura jamaicensis | Schwarzkopfruderente |
| ornit. | ruddy duck | Schwarzkopf-Ruderente (Oxyura jamaicensis) |
| environ., nat.res. | ruddy duck | Schwarzkopf-Ruderente (Oxyura jamaicensis) |
| gen. | Ruddy Duck | Schwarzkopf-Ruderente (Oxyura jamaicensis) |
| gen. | ruddy-faced | rotgesichtig |
| ornit. | ruddy foliage-gleaner | Zimtkehl-Baumspäher (Automolus rubiginosus) |
| ornit. | ruddy ground dove | Rosttäubchen (Columbigallina talpacoti, Columbina talpacoti) |
| gen. | ruddy ground dove Columbina talpacoti | Rosttäubchen |
| gen. | Ruddy Ground Dove | Talpacotitaube |
| ornit. | ruddy-headed goose | Rotkopfgans (Chloephaga rubidiceps) |
| gen. | Ruddy-headed Goose | Rotkopfgans |
| ornit. | ruddy kingfisher | Feuerliest (Entomothera coromanda, Halsyon coromanda) |
| gen. | Ruddy Kingfisher | Feuerliest |
| ornit. | ruddy leaf-gleaner | Zimtkehl-Baumspäher (Automolus rubiginosus) |
| nat.res. | ruddy mongoose | indische Rotmanguste (Herpestes smithii) |
| entomol. | ruddy ochreous flat-body | Europäische Artischockenmotte (Depressaria subpropinquella) |
| ornit. | ruddy oriole | Halmahera-Pirol (Mimcta phaeochroma, Oriolus phaeochromus) |
| ornit. | ruddy pigeon | Purpurtaube (Columba subvinacea, Patagioenas subvinacea) |
| ornit. | ruddy pigeon | Rötliche Taube (Columba subvinacea, Patagioenas subvinacea) |
| gen. | Ruddy Pigeon | Purpurtaube |
| ornit. | ruddy quail dove | Rote Erdtaube (Geotrygon montana) |
| ornit. | ruddy quail dove | Bergtaube (Geotrygon montana) |
| gen. | Ruddy Quail Dove | Bergtaube |
| gen. | ruddy quail-dove Geotrygon montana | Bergtaube |
| ornit. | ruddy rosefinch | Edwardsgimpel (Carpodacus edwardsii) |
| ornit. | ruddy sheld duck | Rostkasarka (Casarca ferruginea, Tadorna ferruginea) |
| ornit. | ruddy sheld duck | Rostgans (Casarca ferruginea, Tadorna ferruginea) |
| nat.res. | ruddy shelduck | Rostgans (Casarca ferruginea, Tadorna ferruginea) |
| zool. | ruddy shelduck | Rostgans (Tadorna ferruginea) |
| ornit. | ruddy shelduck | Rostgans (Tadoma ferruginea) |
| gen. | Ruddy Shelduck | Rostgans (Tadorna ferruginea) |
| environ., nat.res. | ruddy snub-nosed monitor | Gelbwaran (Varanus flavescens) |
| ornit. | ruddy spinetail | Rötelschlüpfer (Synallaxis rutilans) |
| entomol. | ruddy sympetrum | Blutrote Wasserjungfer (Sympetium sanguineum) |
| entomol. | ruddy sympetrum | Blutrote Heidelibelle (Sympetium sanguineum) |
| ornit. | ruddy-tailed flycatcher | Zimtschwanztyrann (Terenotriccus erythrurus) |
| gen. | Ruddy-tailed Flycatcher | Zimtschwanztyrann |
| gen. | Ruddy Tody Flycatcher | Rostkopf-Spateltyrann |
| ornit. | ruddy tody-flycatcher | Rostkopf-Spateltyrann (Todirostrum russatum) |
| ornit. | ruddy tody-tyrant | Rostkopf-Spateltyrann (Todirostrum russatum) |
| ornit. | ruddy treerunner | Bergstachelschwanz (Margarornis rubiginosus) |
| gen. | Ruddy Treerunner | Bergstachelschwanz |
| environ., nat.res. | ruddy turnstone | Steinwälzer (Arenaria interpres) |
| ornit. | ruddy turnstone | Steinwälzer (Arenaria interpres) |
| ornit. | Ruddy Turnstone | Steinwälzer (Arenaria interpres) |
| gen. | ruddy turnstone Arenaria interpres | Steinwälzer (Vogel) |
| mamm. | ruddy vole | gelbbraune Rötelmaus (Clethrionomys rutilus) |
| mamm. | ruddy vole | nordische Rötelmaus (Clethrionomys rutilus) |
| mamm. | ruddy vole | sibirische Rötelmaus (Clethrionomys rutilus) |
| mamm. | ruddy vole | sibirische Polar-Rötelmaus (Clethrionomys rutilus) |
| mamm. | ruddy vole | Polar-Rötelmaus (Clethrionomys rutilus) |
| ornit. | ruddy waxbill | Dunkelamarant (Lagonosticta rubricata) |
| ornit. | ruddy waxbill | Dunkelroter Amarant (Lagonosticta rubricata) |
| ornit. | ruddy woodcreeper | Kappenbaumsteiger (Dendrocincla homochroa) |
| gen. | Ruddy Woodcreeper | Kappenbaumsteiger |
| life.sc., environ. | yellow monitor, ruddy snub-nosed monitor, yellow land lizard, Indian oralgrain lizard | Gelbwaran (Varanus flavescens) |
