Caption Group
Richard Tyler

112. American Black Tern, Long Nanny, July 2022. This photo was taken on 13th July and the white around the bill indicates that the bird is beginning its body moult into non-breeding plumage. Many American Black Terns begin moult into non-breeding plumage three to four weeks later than European Black Terns. The Northumberland bird’s state of moult when seen at Budle Bay in late August 2022 was unchanged from when it was last seen at Long Nanny one month previously, in late July, indicating that the bird had suspended its moult once it left Long Nanny.

Stay at the forefront of British birding by taking out a subscription to British Birds.

Subscribe Now