any predator worth his salt can slice through chicken wire like it was butter. 1/2" Hardware cloth is the gold standard of chicken fencing however it has to be securely attached to framing so it can't be pulled or clawed off. No plastic zip ties, they are useless.
Glad you joined.
to have you here with us. Enjoy your time here at BYC!
Sorry a predator got your chickens and one of your ducks! Hope all goes well with your remaining ducks