@article {41686,
	title = {Changes in diet and body condition of Canada Geese before spring migration},
	journal = {The Auk},
	volume = {98},
	year = {1981},
	month = {1981},
	pages = {65},
	author = {McLandress, M. R. and Raveling, D. G.}
}
@article {41663,
	title = {Effects of spring body condition and age on reproduction in Mallards (Anas platyrhynchos)},
	journal = {The Auk},
	volume = {125},
	year = {2008},
	month = {2008},
	pages = {618},
	author = {Devries, J. H. and Brook, R. W. and Howerter, D. W. and Anderson, M. G.}
}
@article {DavisonAnkney1978,
	title = {Nutrient Reserves and Reproductive Performance of Female Lesser Snow Geese},
	journal = {The Auk},
	year = {1978},
	pages = {459{\textendash}471},
	doi = {10.2307/4085149},
	url = {http://www.jstor.org/stable/4085149},
	author = {C. Davison Ankney and Charles D. MacInnes}
}
