It will be mixed in the nest material, to glue the nest to a wall or cave.
No, a swift is a bird :)
Humming bird
A "Swallow"is a small and swift lying bird with a deeply forked tail.
The Swift ====== ->-
Swift.
No, it is a bird.
A Swift.
Do you mean a bird that is called a "swift"? Or do you mean the word "swift" as in: "The train made a swift departure from the station"?
Swift(Russia & Himalayas)
Mauerschwalbe
fast
robin