Doug Bell 1987 Catalog 172278 DAB Larus occidentalis 137 Location: Green Rock, 2mi. NNW of Birdrock, Trinidad Head Humboldt Co. CA. Date: May 27 ' 1987 Sex: ♂ 1.41x1.04x0.83(6); R: 1.02x0.85x0.69 Wt: 1130g Fat Moderate Wing length: left: 42.1cm chord: Primary length: 10: 29.4cm 7: 28.2cm 9: 30.04cm 6: 26.7cm 8: 30.0cm 5: 24.9 cm Tail: 15.5cm trace pigment in shafts Tarsus left: 6.28cm out: 6.Φcm mid: 6.38 in: 4.75 tae: 0.57 Head length: 12.24 cm Bill length: 5.79cm post. Nares: 3.59cm Bill width: 1.26 cm Bill depth: Gonyx: 2.02 cm Ant Nares 1.98 cm Post Nares 1.93 cm Brood patches: 3 Bill color: 10 Y R 7-10 Eye ring color: 10 Y R 7-10 Irides: 5Y 8-2 diffuse pigment in lower ½ Legs: 2.5R 8-2 Remarks: 1 frozen + 1 EtOH tissue trial. Stomach empty except for a few stones + remains of mussel shells. Patches of oil on feathers.