Iv started lambing my flock last week and let first ones outside today. Really want to try to make the best off grass again. Have electric fences already got and used last few years. My question is, is it better to start ewes and lambs on paddocks soon as they be let out in spring, some fields have more shelter than others in the paddocks, or let ewes graze whole fields until there is more growth and start to paddock graze then