"Ducks are birds."
Translation:Enten sind Vögel.
⟨t⟩ is pronounced, but only as a glottal stop. I don't know what your native language is, but if it is English (or you know it well enough), the pronunciation of ⟨t⟩ is the same that most (all?) English varieties use before a nasal consonant (m, n)—for example in ‘button’—or that Cockney uses in most positions. German does this to some degree (depending also on speed and carefulness of enunciation) with all stops (t, d, p, b, k, g) when preceding ⟨(e)n⟩. The place of articulation of the stops dictates the realisation of the nasal consonant (⟨t, d⟩ → [n]; ⟨p, b⟩ → [m]; ⟨k, g⟩ → [ŋ]).