| blue stone | Blaustein |
| blue stonecrop | Tripmadam |
| blue straggler | Blaue Nachzügler |
| Blue Streak | Blue Streak |
| Blue Streak missile | Blue Streak |
| Blue Stream | Blauer Strom |
| blue stripe butterfly | Hawaii-Falterfisch |
| blue stripe butterflyfish | Blaustreifen-Falterfisch |
| blue stripe clown | Orangeflossen-Anemonenfisch |
| blue suit | blauer Anzug |
| blue supergiant | Blauer Überriese |
| blue swallow | Stahlschwalbe |
| blue sweet pea | Saat-Platterbse |
| blue tang | Paletten-Doktorfisch |
| Blue Tegu | Goldteju |
| blue temper heat | Blauwärme |
| Blue Thunder | Das fliegende Auge |
| blue tit | Blaumeise |
| blue tongue disease | Blauzungenkrankheit |
| Blue Tornado | Blue Tornado - Männer wie Stahl |
| blue torpedo goby | Sand-Torpedobarsch |
| Blue Train | Blue Train |
| blue trousers | blaue Hose |
| blue underwing | Blaues Ordensband |
| blue underwing moth | Blaues Ordensband |
| blue unicorn | Blauschwanz-Nasendoktorfisch |
| blue vanga | Blauvanga |
| blue vat | Blauküpe |
| Blue Velvet | Blue Velvet |
| blue velvet damselfish | Neon-Riffbarsch |
| blue video | Porno |
| blue violet | Duftveilchen |
| blue vitriol | blauer Vitriol |
| blue water speedwell | Blauer Wasser-Ehrenpreis |
| Blue Water, White Death | Blaues Wasser, weisser Tod |
| blue wax | blaues Wachs |
| blue waxbill | blauohriger Schmetterlingsfink |
| blue weakness | Blausehschwäche |
| Blue Whale | Blauwal |
| blue whale bull | Blauwalbulle |
| blue whale bulls | Blauwalbullen |
| blue whale calf | Blauwalkalb |
| blue whale calves | Blauwalkälber |
| blue whale cow | Blauwalkuh |
| blue whale cows | Blauwalkühe |
| blue whiting | Blauer Wittling |
| blue whortleberry | Schwarzbeere |
| blue wildebeest | Streifengnu |
| blue wildebeests | Streifengnus |
| blue willow | Silberweide |
| blue with cold | blau vor Kälte |
| blue wood aster | Schleieraster |
| blue wood lettuce | Zweijähriger Lattich |
| blue wren | Prachtstaffelschwanz |
| blue wren warbler | Kaiserstaffelschwanz |
| blue zinc violet | Blaues Galmei-Veilchen |
| Blue Öyster Cult | Blue Öyster Cult |
| Blue's Clues | Blue's Clues - Blau und schlau |
| blue-and-gold macaw | Gelbbrustara |
| Blue-and-White Flycatcher | Japanschnäpper |
| Blue-and-yellow Macaw | Gelbbrustara |
| blue-back grosbeak | Stahlbischof |
| blue-backed conebill | Blaurücken-Spitzschnabel |
| blue-backed fairy bluebird | Türkisfeenvogel |
| blue-backed manakin | Prachtpipra |
| blue-backed niltava | Hyazinthenblauschnäpper |
| blue-backed pitta | Blaubürzelpitta |
| blue-backed tanager | Ziertangare |
| blue-banded grass parakeet | Feinsittich |
| blue-banded kingfisher | Brustbandeisvogel |
| blue-banded parakeet | Feinsittich |
| blue-banded pitta | Rotkopfpitta |
| blue-banded toucanet | Grauschnabelarassari |
| blue-beared bee eater | Blaubartspint |
| blue-bellied parrot | Blaubauchpapagei |
| blue-bellied roller | Opalracke |
| blue-billed black tyrant | Blauschnabeltyrann |
| blue-billed curassow | Blaulappenhokko |
| blue-billed duck | Australische Ruderente |
| blue-black | dunkel-blau |
| blue-black grassquit | Jacariniammer |
| blue-black kingfisher | Dunkelliest |
| blue-blood | adlig |
| blue-blooded | blaublütig |
| blue-bonnet | Blutbauchsittich |
| blue-bottle | Portugiesische Galeere |
| blue-breasted banded rail | Graubrustralle |
| blue-breasted bee eater | Blaubrustspint |
| blue-breasted cordon-bleu | Blauastrild |
| blue-breasted kingfisher | Zügelliest |
| blue-breasted niltava | Heriotblauschnäpper |
| blue-breasted wren | Blaubrust-Staffelschwanz |
| blue-browed tanager | Silberbrauentangare |
| blue-cape asbestos | Kap-Asbest |
| blue-capped babbler | Blaukappenflöter |
| blue-capped cordon-bleu | Blaukopf-Schmetterlingsfink |
| blue-capped fruit dove | Blaukappen-Fruchttaube |
| blue-capped puffleg | Blaukappen-Schneehöschen |
| blue-capped redstart | Blaukopf-Rotschwanz |
| blue-capped rock thrush | Himalayarötel |
| blue-capped tanager | Gelbschenkeltangare |
| blue-carbon leaf | Durchschreibpapier |
| blue-checked bee eater | Blauwangenspint |
| blue-cheeked amazon | Goldmaskenamazone |
| blue-cheeked bee eater | Madagaskarspint |
| blue-cheeked bee-eater | Blauwangenspint |
| blue-cheeked flowerpecker | Blauwangen-Mistelfresser |
| blue-chested hummingbird | Blaubrustamazilie |
| blue-chested parakeet | Blaulatzsittich |
| blue-chinned sapphire | Blaukinnelfe |
| blue-chip | erstklassig |
| blue-chip credit rating | erstklassige Bonität |
| blue-chip customers | erste Adressen |
| blue-chip industrials | erstklassige Industriewerte |
| blue-chip securities | Blue chips |
| blue-clad | blau gekleidet |
| blue-collar union | Arbeitergewerkschaft |
| blue-collar worker | Arbeiter |
| blue-collar workers | Arbeiter |
| blue-collared parrot | Blauhalspapagei |
| blue-crowned barbet | Temminckbartvogel |
| blue-crowned chlorophonia | Blauscheitelorganist |
| blue-crowned conure | Spitzschwanzsittich |
| Blue-crowned Hanging Parrot | Blaukrönchen |
| blue-crowned lory | Blaukäppchen |
| blue-crowned manakin | Blauscheitelpipra |
| blue-crowned motmot | Blauscheitelmotmot |
| blue-crowned parakeet | Spitzschwanzsittich |
| blue-crowned racket-tailed parrot | Philippinen-Spatelschwanzpapagei |
| blue-crowned trogon | Blauscheiteltrogon |
| blue-dyed | blau gefärbt |
| blue-eared barbet | Blauohr-Bartvogel |
| blue-eared kingfisher | Menintingeisvogel |
| blue-eared lory | Halbmaskenlori |
| blue-eye | Blauauge |
| blue-eyed | blauäugig |
| Blue-eyed boy | Favorit |
| blue-eyed boys | Goldjungen |
| Blue-eyed Cockatoo | Brillenkakadu |
| blue-eyed cormorant | Blauaugenscharbe |
| blue-eyed grasses | Grasschwerteln |
| blue-eyes | Blauaugen |
| blue-faced booby | Maskentölpel |
| Blue-faced Honeyeater | Blauohr-Honigfresser |
| blue-faced parrot finch | Dreifarben-Papageiamadine |
| blue-flag iris | verschiedenfarbige Schwertlilie |
| Blue-footed Booby | Blaufußtölpel |
| Blue-fronted Amazon | Blaustirnamazone |
| blue-fronted amazon parrot | Blaustirnamazone |
| blue-fronted callene | Blauschmätzer |
