Bea wrote:I think both words are "correct".
Maybe Felis silvestris has one more idea about this all tomorrow.
Interesting question. But I am neither an ornithologist or biologist, nor a linguist. I'm good at research.
I have asked Wikipedia nevertheless, and found, that "Raubvogel" and "Greifvogel" have got to do with the classification system of birds. I have looked into this a little when I sorted photos I made according to that. Since then I know where to search for a certain birds species in the system.
"Raubvogel" is, according to Wikipedia, no longer in use, historically R. comprised Falconiformes (Falkenartige - "falcon-like"), Accipitriformes (Greifvögel!! - "bird of prey") and Strigiformes (owls).
Some guy called
Max Fürbringer worked on that and found out some new things. Wiki writes, since then term Raubvogel is void. First they have been renamed "Greifvögel". Classifications have been changed a few times, but today in the new systematics Raubvögel have been divided in "Falkenartige" (Falconiformes), Greifvögel (Accipitriformes) und Eulen (Strigiformes).
Even more interesting was a look into English Wikipedia.
Raptor - Raziel wrote it, basically we all must have seen Jurassic Park and those nice little beasts - the velociraptors.
Wiki writes:
The term "raptor" is derived from the Latin word rapere (meaning to seize or take by force) and may refer informally to all birds of prey, or specifically to the diurnal group.
My guess as a non-linguist, the German word "Raub" in Raubvogel, is derived from the same source. Some words have changed a bit more over times.
Wikipedia has no proper article for "Raptor" alone, it leads on to "Bird of Prey".
Quote Wiki:
Taken literally, the term "bird of prey" has a wide meaning that includes many birds that hunt and feed on animals and also birds that eat very small insects. In ornithology, and the definition used here, the term has a narrower meaning for birds that have very good eyesight for finding food, strong feet for holding food, and a strong curved beak for tearing flesh. Most birds of prey also have strong curved talons for catching or killing prey. Birds of prey generally prey on vertebrates, which are usually quite large relative to the size of the bird.
I think that shed a light on the scientific use. But in common speech such things never play a big role, people know a goshawk flying as "Raubvogel" and go for "Greifvogelshow" to see eagles and owls flying.
I personally had never any misgivings about the "Raub" in the bird, but knowing it's an obsolete term, maybe not use it again. In English both terms are in scientific use, just think of
Global Raptor Information Network and others.
Unkraut - Wildkraut - Unkraut is a plant ("Kraut") which is not wanted - "
unerwünscht" in German. Wildkraut are all wild growing plants that are edible without being changed by breeding and are indigenous. (definition also found in Wikipedia)