They should be OK until they start podding then the birds will have another go at them in particulars Jays & Magpies.
Many a time I have found bean pods opened like a zip fastener i.e. the birds peck up the edge of the pod to expose the beans inside.
So keep a look out for these tell tale signs then net up again if necessary.
Your next problem might well be 'black fly'
I allow five sets of flowers to form then I remove the top of the plant, I have often found that if I go for a sixth set of flowers I get a black fly problem.
Meaning I might get a few less beans but I find that those I get are healthy and well filled which is better than (in my book) more partially filled soft beans.
Each to their own!!
