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BALDASSARRE, G. A., and E. G. BOLEN. 1984. Field-feeding ecology of waterfowl 
     wintering on the Southern High Plains of Texas. Journal of Wildlife 
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BELLROSE, F. C. 1980. Ducks, geese and swans of North America. Third edition. 
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BENNETT, K. E., T. J. SIEBENMORGEN, E. VORIES, and A. MAUROMOUSTAKOS. 1993. Rice 
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BROMLEY, R. G., and R. L. JARVIS. 1993. The energetics of migration and reproduction 
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BRYANT, D. M., C. J. HAILS, and R. PRYS-JONES. 1985. Energy expenditure by free-
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CAIN, B. W 1973. Effect of temperature on energy requirements and northward 
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CENTRAL VALLEY HABITAT JOINT VENTURE. 1990. Central Valley Habitat Joint Venture 
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CHABRECK, R. H., T. JOANEN, and S. L. PAULUS. 1989. Southern coastal marshes and 
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_____. 1989. Agriculture/wildlife enhancement in California: The Central Valley 
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_____, D. P. CONNELLY, and R. L. PEDERSON. 1989. The Central, Imperial, and 
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MILLER, M. R. 1984. Comparative ability of northern pintails, gadwalls, and northern 
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_____. 1986a. Molt chronology of northern pintails in California. Journal of 
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_____. 1987. Fall and winter foods of northern pintails in the Sacramento 
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_____, and K. J. REINECKE. 1984. Proper expression of metabolizable energy in 
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_____, D. E. SHARP, D. S. GILMER, and W. R. MULVANEY. 1989. Rice available to 
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_____, and G. D. WYLIE. 1997. Preliminary estimate of rice present in strip-
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MORTON, J. M., A. C. FOWLER, and R. L. KIRKPATRICK. 1989. Time and energy budgets 
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_____, and G. L. KRAPU. 1986. Feeding ecology of sandhill cranes during spring 
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