Some crow experts discourage feeding them because they can be a bit too much.
OTOH the Swiss Department of Agriculture says that there is nothing that actually works against corvids. You can scare them and you can make their life difficult, but they learn, and show others how to bypass issues (possibly on "Corvid News"), so they might lose some battle but will win the war.
OTOH the Swiss Department of Agriculture says that there is nothing that actually works against corvids. You can scare them and you can make their life difficult, but they learn, and show others how to bypass issues (possibly on "Corvid News"), so they might lose some battle but will win the war.