But as noted you could use the frame and switch between polythene cover and netting cover depending on season.
I don't beleive a properly tensioned net of suitable size mesh is likely to trap birds, but I don't know what netting is suitable so I use wire mesh instead. It might not look as natural as green plastic netting, but definitely doesn't trap birds. If in doubt use aviary mesh (mine are mostly chicken wire).
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Some comments here never cease to amaze me.
exactly & if you care about bird numbers get rid of all the cats in your area...theyre the real problem
Couple of weeks ago we rescued a magpie that had got himself trapped in the netting of someone else's plot. all was well
When we saw the plot owners we mentioned it, just so they knew why we were on their plot. They took the net down that day.
Mine just has net draped over the top of it for the moment. When the time comes, we've got an old gazebo frame that we are going to use
A polytunnel is a cheap greenhouse.
But as noted you could use the frame and switch between polythene cover and netting cover depending on season.
I don't beleive a properly tensioned net of suitable size mesh is likely to trap birds, but I don't know what netting is suitable so I use wire mesh instead. It might not look as natural as green plastic netting, but definitely doesn't trap birds. If in doubt use aviary mesh (mine are mostly chicken wire).
55 million birds a year are killed by cats in the uk!