White Tern, Gygis alba (Cousin Island, Seychelles)White Tern, Gygis alba (Cousin Island, Seychelles)White Tern, Gygis alba (Cousin Island, Seychelles)White Tern, Gygis alba (Cousin Island, Seychelles)White Tern, Gygis alba (Cousin Island, Seychelles)