Doug Bell 1988 Catalog 172402 Larus occidentalis occidentalis Location: Alcatraz I. (Parade Grounds); San Francisco Co., Calif. Date: 13 May 1988 284 Sex: & LT 1.69 x 1.09 x 0.94 RT: 1.58 x 1.08 x 0.90 cm Weight: 1,165 gms Fat: Light Winglength R 41.5 cm Span: 145.3 cm Pr length 10 29.1 cm 7 27.2 cm 9 29.2 W 6 25.4 8 28.2 5 23.7 Tail length 15.3 cm Two central reets. With 8cm x 1cm flecking. Tarsus: 6.72 Toes: in: 4.15 out: 5.89 mid: 6.12 0.48 Head length: 12.93 Bill length: 6.06 Post narcs: 3.47 Bill width: 1.39 Gap: 3.14 Bill depth: 2.29 ant Narcs: 2.18 Past Narcs: 2.07 Bill Color: UM: 2.5Y 7/10 LM: 2.5Y 7/10 SPOT 5YR 5/10 Eyering color: 2.5Y 7/10 Irides: 5Y 8/2 Pigment 10YR 7/2 Very light, diffuse sparse flecks lower 4/3 Legs: SRP 8/2 Brood Patches: 3 Remarks: Trapped off 3 eggs. Mate of 283 Brown coverts, small windows. Alular LW+ RW+. Segmt'd. worms in mesenteries (mild). Stomach contains small fish remains, rocks, glass.