un-netting brassicas

One of my nets has blown off the sprouts and they seem ok but my mother in law says the pigeons will eat them , I thought they were ok  to remove once they got to a certain size? all my other brassicas are near the top of the nets?

I would put it back on quick, and after they have had the tops they will start on the sprouts.

I guess the chicken wire would do now the cabbage whites have gone the nets are torn beyond repair.