Hachero, O.O 1967 Species Account White Tern (Gygis alba) March 26-30 Kress & Kure Alall Two birds seen during an island circuit on 26-27 March. No nests found. Hachero 1967 Measurements Blue-faced Booby (Sula dactylatra) Nests were along ridge in bare areas. In one area nests were only 4 feet apart but in most areas the birds were 15 to 20 feet apart. measurements are in millimeters. AF 2 eggs: 45.1 x 66.6 ; 44.1 x 60.8 AM 1 egg: 44.2 x 65.1 AM 2 eggs: 44.95 x 66.25 ; 44.1 x 63.1 AM 2 eggs: 44.7 x 62.2 ; 43.2 x 63.1 AF 2 eggs: 42.1 x 70 ; 46.4 x 66.65 AF 2 eggs: 45.7 x 64.3 ; 44.8 x 68.1 AF 1 egg: 46.8 x 64.5 AF 2 eggs: 46.5 x 70.8; 44.5 x 66 -- 2 eggs: 45.7 x 67.7 ; 44.7 x 64.8 AM 2 eggs: 47.6 x 68.8 ; 44.4 x 69.2 -- 1 egg: 45.7 x 63.3