Our avian nets are mostly one inch grid (some areas with 2 inch net, still seem ok to keep small birds out). On icy days (not often), I simply knock them off! We've had these nets since 2020, so far so good!
We use nylon avian netting to keep birds out of chicken run area. And in summer, we added shade cloth on top of the avian nets - for shades and also to keep them from wild bird droppings when avian flu was go around in the area.