For more information about Grey Herons: https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/grey-heron/
Near Waldringfield, grey herons are distinctive being quite a bit larger than Egrets. There is a large Heronry where they nest near the Tips in the tops of the trees. They are resident all year round and quite common along the edge of the river and in the Waller Reserve.