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Measurements
Linear
See Appendix . Cramp and Simmons (1983) found no differences between sexes in any linear measurement. Wing and tail length differed between adults and juveniles; bill, tarsus, and toe were similar after Nov. Individuals from central Canada have significantly longer wings than individuals to east and west (Prater et al. 1977).
Mass
Cramp and Simmons (1983) summarized a variety of data from nonbreeding areas. Mean mass varies from 153 g ± 13 SD (n = 16) to 179 g ± 35 SD (n = 11) depending on time of year: Mass peaks in Mar–Apr and again in Sep. Data for birds of known age or sex suggest that adults are heavier then first-year birds (157 g ± 23 SD [n = 5] versus 150 g ± 22 SD [n = 7]; data from Oct–Dec) and females are heavier than males (176 g ± 28 SD [n = 9] versus 164 g ± 30 SD [n = 6]; data from Sep–Mar). Few data from breeding grounds. In s.-central Alaska, a breeding female weighed 187 g soon after arrival in spring (24 Apr), and 3 adults weighed 152, 163, and 160 g, respectively, in early Jun just after chicks had hatched (TLT).
Elphick, Chris S. and T. Lee Tibbitts. 1998. Greater Yellowlegs (Tringa melanoleuca), The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology; Retrieved from the Birds of North America Online: http://bna.birds.cornell.edu/bna/species/355
