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Measurements
Linear
See Appendix 2 . Males significantly larger than females for all measurements.
Mass
See Appendix 2 .
Pierotti, R. J. and T. P. Good. 1994. Herring Gull (Larus argentatus), 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/124