Linear body measurements (mm) of Mew Gulls in various parts of their range. Data given as mean (where available) ± SD (range, n).

LocationNorth AmericaE. AsiaCentral AsiaEurope
SubspeciesL. c. brachyrhynchusL. c. kamtschatshensisL. c. heineiL. c. canus
Source24283434
1828
Wing (chord)
Male358.9 (352–366, 7)375.5 (362–388, 10)382.0 ± 15.0 (355–395, 8)360.0 ± (342–380, 22)
350.5 (334–366, 12)367.0 ± 5.4 (361–374, 3)(1)386.4 (362–410, 50)
(365–388)(2)
Female344.6 (328–354, 11)365.4 (360–372, 10)368 ± 10.0 (351–379, 7)341.0 ± 10.3 (321–357, 21)
337.5 (328–352, 11)(350–365)(2)351.8 (348–395, 54)
Tail
Male142.8 (137–148, 7)150.8 (147–154, 7)(4)145.0 ± 10.6 (138–153, 2)139.0 ± 2.0 (134–144, 24)
139.9 (130–148, 12)
Female134.9 (131.5–139, 11)140.6 (133–147, 6)(4)140.0 ± 2.0 (137–142, 4)129.0 ± 4.3 (118–136, 26)
134.1 (128–141, 11)
Tarsus
Male49.4 (46.5–51, 7)52.9 ± 0.2 (52.7–53.0, 3)(1)52.3 ± 2.7 (50.4–54.2, 2)51.1 ± 2.0 (46.4–55.0, 26)
51.0 (48–53, 12)55.9 (54–58, 7)(4)
Female46.7 (45–48, 11)51.5 (49–54, 6)(4)49.7 ± 3.7 (46.0–54.8, 4)47.7 ± 2.0 (43.4–52.0, 27)
48.6 (47–51, 11)
Exposed culmen
Male36.4 (33–38, 7)38.9 ± 1.4 (37.3–40.6, 3)(1)35.7 ± 2.0 (33.2–38.5, 8)34.5 ± (32.0–38.4, 25)
35.4 (33–38, 12)36.9 ± 2.3 (34.8–41.9, 8)(3)
Female34.1 (32–37, 11)34.1 ± 3.7 (29.5–37.2, 4)(3)32.7 ± 1.3 (31.0–34.9, 5)31.1 ± (27.5–34.6, 27)
32.4 (30–35, 11)
Bill depth at gonys
Male(10.0–12.0)(2)12.0 ± 0.5 (11.6–12.7, 3)(1)10.51 ±0.38 (10.13–10.89, 2)(1)
10.8 (10.0–11.5, 12)(12.5–14.0)(2)
Female(12.0–13.0)(2)10.50 ± 0.28 (10.22–10.78, 2)(1)
10.0 (9.0–11.0, 11)