Latin, biological name. Taken over from APUS APUS, English Swift or German Swifts. The word originates from biological systematics and naming. The bird belongs to the order of sailor birds (Apodiformes), family of sailors (Apodidae). The names arose since one could not see the feet with the migratory birds, they are hidden in the plumage. Birds are in the air and on the move most of their lives. They are therefore also associated with the term celestial dwellers. They only land for breeding.
The typical gliders (Apodini), to which the APUS APUS also belongs, are considered the most modern form, with their pamprodactylene toe arrangement (all toes pointing forward) and the more elaborate nests