We've lost birds to opossums too, before we had the safer coop that we developed after issues with them, opossums, and once, rats.
Having horses, opossums are NOT welcome near our barn or hay storage area, at least. They carry an intestinal; parasite, not a problem for them, but very bad for equines. 'Sarcocystis neurona', causing EPM, a fatal or severely debilitating neurological disease. One of my horses had it twice, survived thanks to treatment, and was unsound, not ridable, the rest of her life.
Just not a fan of opossums!!!
And they can get rabies occasionally.
Mary