These beauties are the last of the birds I’ll share from my recent trip to Weymouth: Sandwich terns (Sterna sandvicensis). Though some tern species can be tricky to tell apart (Common and Arctic, in particular), with their yellow-tipped black beaks, black legs and black-capped heads, Sandwich terns are a bit more straight forward to identify.

~  Sandwich terns seen here with mostly Mediterranean gulls, Dunlin & Ringed plover

As you can perhaps see in my photos, the black cap on its head is not a permanent feature; it is fully black at the beginning of the breeding season but then quickly begins to develop white speckles above the eyes and, by the end of the summer, the whole of the forehead is white, making the ‘hair do’ resemble more of a monk’s tonsure. I guess the stress of raising young will do that, even to terns!

I didn’t know much about these birds but my guide book tells me that Sandwich terns breed in northern Europe (including in colonies around the coast of Britain), Russia and North America, then move south, which is when they can be seen in southern Britain, on passage to their wintering locations, mostly on the west coast of Africa.

If you’re wondering, as I was, about the origin of its name, in Fauna Britannica, Stefan Buczacki tells that ‘Its association with the town of Sandwich on the Kent coast dates back to 1785, when the naturalist John Latham was sent specimens collected from there by some local boys’.