Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern Cook Island, Kiribati, November 22, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern West of Christmas Island, Kiribati, November 25, 2012 © Donald H. Gudehus

Gygis alba (Sparman, 1786) - The White Tern West of Christmas Island, Kiribati, November 25, 2012 © Donald H. Gudehus