Nets and brassicas... question.

I've had the nets on for about a month now and am wondering if they're stifling the growth.  Does anyone think it's a safe time of year now to take them off?  It's the birds I'm worried about more than butterflies as they've eaten loads of cabbage round ours this year.  Also, there's loads of weeds I can't get to and am itching to pull up 

Nice one DD. that's sort of what I had in mind to do - then it shall be done!!  I can't believe I'm looking out the window and we actually have sun!  Off to get dressed, Ha.  A fair weather gardner am I 

back after successfully weeding my turnips and broccoli and re netting, blimey that was an early start.  Cabbage and caulis either later today or tomorrow!  Worried about my peas though, a lot of the leaves seem withered and faded, and a lot of the peas look like they're rotting a bit or being eaten.  Nobody's ever warned me about this so it's taken me a bit by surprise!  Still managed to pick a few though and they're lovely and tasty!!