Good numbers of ducks and waders are now returning to Hayle Estuary, for a rest bite from their long southward journeys or to spend their winter holidays here with us. You can see curlew, bar-tailed godwit, dunlin, ringed plover, oystercatcher, redshank, teal and wigeon all back on the mudflats. Grey herons and their white cousins the little egrets are easy to see as they feed along the water’s edge on fish that live…