PLATE XLIII 



Hioto by 1-. li. K is km, m 



Well-lined common-tern's nest in marram grass (Walney) 



Photu by 1-. B. Kirkinan 



Arctic-tern sitting: on its neat in bare sand (Walney) 



Photo by J. Atkinso 



Photo by J. Atkinson 



Little-tern's nest lined with pebbles 



Little-tern'a nest in bare sand 



