Catalog 172610 409 Larus glaucescens Location: Mouth of Oyster River, Vancouver Id., B.C., Canada Date July 19, 1988 Sex ♀ Zona > 0.25cm Zona > 0.15 cm ♀ Weight 935g Fat: Good Winglength R 40.3 Span 138.5cm Pr. length 10 28.2 7 26.5 9 28.6 6 25.0 B 24.0 5 molted Tail length 15.9 Tarsus R 6.29 Toes in 4.36 mid 5.72 out 5.51 Head length 11.89 Hal 0.49 Bill length 5.71 Post maxs 3.53 Bill width 1.12 Gape 2.90 Bill depth Gonys 1.99 and maxs 1.85 post maxs 1.67 Brood patches: 3 refethoring Bill color lm 5YR 6/6 um 5YR 6/6 spot 5YR 6/14 eyering Color 5RP 5/6 Irides 5YR 6/6 Pigment 10YR 3/2 light grains throughout Legs 5RP 6/4 Remarks: shot. P% 0-6, 4-1; stomach empty. slight mesenteric worm infestation in mesentery.