Don Bell 1987 Catalog 172282 DAB Larus occidentalis Green Rock, ami NNW of 141 Location: Birdrock, Trinidad Head, Humboldt Co., CA. Date: May 27, 1987 Sex: $ L: 1.89 x 1.25 x 1.17 R: 1.42 x 1.18 x 1.13 Wt: 1260 g Fat: Moderate Winglength left: 42.4 cm Chord: 137.5 cm Primary length: 10: 29.6 cm 7: 28.4 9: 30.3 6: 26.2 8: 29.6 5: 24.7 Tail: 16.4 cm trace pigment in shafts Tarsus: left: 6.58 cm out: 6.17 mid 6.6cm in: 4.67 tal 0.5cm Head length: 12.94 cm Bill length: 6.07 cm post. Nares 3.21 Bill width: 1.40 cm Bill depth: Gonyx: 2.22 Ant. Nares: 2.46 Post. Nares: 2.04 Brood patches: 3 Bill color: 10 YR 7-10 Eyernig color: 10 YR 7-10 gony color in rear corner Irides: 5Y 8-2 diffuse pyim lower 3/3 Legs: 5 R 8-2 Remarks: Stomach empty; 2 frozen mibs, 1 eth.