The Avalon Marshes New Colonists Monitoring Group has published its 2021 report, which covers Great Egret, Cattle Egret, Little Bittern, Purple Heron and Night Heron. The data gathered over the last few years has also contributed towards a more detailed study of the colonisation of the Great White Egret, provisionally scheduled for publication in the May issue of British Birds.
To see the report, click here.