By Muhammad Mahdi Karim - Own work, GFDL 1.2, https://commons.wikimedia.org/w/index.php?curid=8038667
Kraai
Where does this species come from?
India
What is its invasive status in South Africa?
NEMBA Category 1a
Where in South Africa is it a problem?
Richards Bay and Durban (KwaZulu-Natal), Cape Town (Western Cape) and East London (Eastern Cape)
How does it spread?
Strongly associated with dense human settlements.
Why is it a problem?
Preys on eggs and nestling of native birds, also eat small native animals. Mobs humans and pets. Occasionally destroys vegetable gardens in informal settlements. Vector for pathogens that cause cholera, typhoid, dysentery and salmonella poisoning.
Sources:
(*) https://en.wikipedia.org/wiki/House_crow(*) https://ebird.org/species/houcro1
(*) https://search.macaulaylibrary.org/catalog?taxonCode=houcro1