By PierreSelim - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=18506598
Where does this species come from?
Europe and some parts of Asia.
What is its invasive status in South Africa?
NEMBA Category 3.
Where in South Africa is it a problem?
Throughout the Western and Eastern Cape Provinces, extending slightly into the Northern Cape, Free State and KwaZulu-Natal.
How does it spread?
Human beings are responsible for the spreading of this bird species through pet trade.
Why is it a problem?
It feeds on a wide variety of insect prey as well as fruits and seeds and competes against indigenous species for the same resources.
Sources:
(*) https://en.wikipedia.org/wiki/Common_starling(*) https://ebird.org/species/eursta
(*) https://search.macaulaylibrary.org/catalog?taxonCode=eursta